SEC Info℠  
    Home      Search      My Interests      Help      Sign In      Please Sign In

Align Technology Inc – ‘10-Q’ for 6/30/20 – ‘EX-101.SCH’

On:  Friday, 7/31/20, at 4:16pm ET   ·   For:  6/30/20   ·   Accession #:  1097149-20-49   ·   File #:  0-32259

Previous ‘10-Q’:  ‘10-Q’ on 5/5/20 for 3/31/20   ·   Next:  ‘10-Q’ on 10/30/20 for 9/30/20   ·   Latest:  ‘10-Q’ on 11/3/23 for 9/30/23

Find Words in Filings emoji
 		  in    Show  and   ↓Hints

  As Of               Filer                 Filing    For·On·As Docs:Size

 7/31/20  Align Technology Inc              10-Q        6/30/20   78:10M

Quarterly Report   —   Form 10-Q   —   Sect. 13 / 15(d) – SEA’34
Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: 10-Q        Quarterly Report                                    HTML   1.13M 
 2: EX-31.1     Certification -- §302 - SOA'02                      HTML     27K 
 3: EX-31.2     Certification -- §302 - SOA'02                      HTML     27K 
 4: EX-32.1     Certification -- §906 - SOA'02                      HTML     26K 
11: R1          Cover Page                                          HTML     75K 
12: R2          Commitments and Contingencies                       HTML     29K 
13: R3          Condensed Consolidated Statements of Operations     HTML     81K 
14: R4          Condensed Consolidated Statements of Comprehensive  HTML     37K 
                Income                                                           
15: R5          Condensed Consolidated Balance Sheets               HTML     96K 
16: R6          Condensed Consolidated Balance Sheets               HTML     38K 
                (Parenthetical)                                                  
17: R7          Condensed Consolidated Statements of Stockholders'  HTML     76K 
                Equity                                                           
18: R8          Condensed Consolidated Statements of Cash Flows     HTML    114K 
19: R9          Summary of Significant Accounting Policies          HTML     47K 
20: R10         Investments and Fair Value Measurements             HTML    169K 
21: R11         Balance Sheet Components                            HTML     85K 
22: R12         Business Combinations                               HTML     53K 
23: R13         Goodwill and Long-lived Assets                      HTML    105K 
24: R14         Equity Method Investments                           HTML     27K 
25: R15         Credit Facilities                                   HTML     26K 
26: R16         Impairments and Other (Gains) Charges               HTML     26K 
27: R17         Legal Proceedings                                   HTML     46K 
28: R18         Stockholders' Equity                                HTML     91K 
29: R19         Common Stock Repurchase Programs                    HTML     26K 
30: R20         Accounting for Income Taxes                         HTML     35K 
31: R21         Net Income Per Share                                HTML     60K 
32: R22         Supplemental Cash Flow Information                  HTML     45K 
33: R23         Segments and Geographical Information               HTML    188K 
34: R24         Summary of Significant Accounting Policies          HTML     57K 
                (Policies)                                                       
35: R25         Investments and Fair Value Measurements (Tables)    HTML    167K 
36: R26         Balance Sheet Components (Tables)                   HTML     92K 
37: R27         Goodwill and Intangible Assets (Tables)             HTML    109K 
38: R28         Stockholders' Equity (Tables)                       HTML     92K 
39: R29         Net Income Per Share (Tables)                       HTML     59K 
40: R30         Supplemental Cash Flow Information (Tables)         HTML     44K 
41: R31         Segments and Geographical Information (Tables)      HTML    186K 
42: R32         Investments and Fair Value Measurements Short-Term  HTML     48K 
                and Long-Term Marketable Securities (Details)                    
43: R33         Investments and Fair Value Measurements Additional  HTML     47K 
                Information (Details)                                            
44: R34         Investments and Fair Value Measurements Summary of  HTML     97K 
                Financial Assets Measured at Fair Value on                       
                Recurring Basis (Details)                                        
45: R35         Investments and Fair Value Measurements Derivative  HTML     70K 
                Notional Instruments (Details)                                   
46: R36         Balance Sheet Components Inventories (Details)      HTML     32K 
47: R37         Balance Sheet Components Prepaid Expenses and       HTML     33K 
                Other Current Assets (Details)                                   
48: R38         Balance Sheet Components Accrued Liabilities        HTML     41K 
                (Details)                                                        
49: R39         Balance Sheet Components Warranty Accrual Activity  HTML     29K 
                (Details)                                                        
50: R40         Balance Sheet Components Deferred Revenues          HTML     26K 
                (Details)                                                        
51: R41         Balance Sheet Components Narrative (Details)        HTML     40K 
52: R42         Business Combinations (Details)                     HTML     71K 
53: R43         Goodwill and Intangible Assets - Change in          HTML     35K 
                Carrying Value of Goodwill (Details)                             
54: R44         Goodwill and Intangible Assets - Intangible Assets  HTML     58K 
                (Details)                                                        
55: R45         Goodwill and Intangible Assets - Total Estimated    HTML     38K 
                Annual Future Amortization Expense for Acquired                  
                Intangible Assets (Details)                                      
56: R46         Goodwill and Intangible Assets - Narrative          HTML     28K 
                (Details)                                                        
57: R47         Equity Method Investments (Details)                 HTML     41K 
58: R48         Credit Facilities - Additional Information          HTML     56K 
                (Details)                                                        
59: R49         Impairments and Other (Gains) Charges (Details)     HTML     29K 
60: R50         Legal Proceedings - Narrative (Details)             HTML     39K 
61: R51         Commitments and Contingencies - Other Commitments   HTML     23K 
                (Details)                                                        
62: R52         Stockholders' Equity - Additional Information       HTML     53K 
                (Details)                                                        
63: R53         Stockholders' Equity - Stock-Based Compensation     HTML     33K 
                Expense Related to All Stock-Based Awards and                    
                Employee Stock Purchases (Details)                               
64: R54         Stockholders' Equity - Summary of Nonvested Shares  HTML     54K 
                (Details)                                                        
65: R55         Stockholders' Equity - Summary of MSU Performance   HTML     48K 
                (Details)                                                        
66: R56         Stockholders' Equity - Stock-based Compensation     HTML     34K 
                Employee Stock Purchase Plan (Details)                           
67: R57         Common Stock Repurchase Programs - Additional       HTML     44K 
                Information (Details)                                            
68: R58         Accounting for Income Taxes - Additional            HTML     39K 
                Information (Details)                                            
69: R59         Computation of Basic and Diluted Net Income Per     HTML     48K 
                Share Attributable to Common Stock (Details)                     
70: R60         Supplemental Cash Flow Information (Detail)         HTML     41K 
71: R61         Segments and Geographical Information - Additional  HTML     23K 
                Information (Details)                                            
72: R62         Segments and Geographical Information - Segment     HTML     56K 
                Information (Details)                                            
73: R63         Segments and Geographical Information - Net         HTML     36K 
                Revenues by Geographic Area (Details)                            
74: R64         Segments and Geographical Information - Long-Lived  HTML     36K 
                Assets by Geographic Area (Details)                              
76: XML         IDEA XML File -- Filing Summary                      XML    141K 
10: XML         XBRL Instance -- algn-20200630_htm                   XML   2.72M 
75: EXCEL       IDEA Workbook of Financial Reports                  XLSX    101K 
 6: EX-101.CAL  XBRL Calculations -- algn-20200630_cal               XML    231K 
 7: EX-101.DEF  XBRL Definitions -- algn-20200630_def                XML    639K 
 8: EX-101.LAB  XBRL Labels -- algn-20200630_lab                     XML   1.52M 
 9: EX-101.PRE  XBRL Presentations -- algn-20200630_pre              XML    935K 
 5: EX-101.SCH  XBRL Schema -- algn-20200630                         XSD    148K 
77: JSON        XBRL Instance as JSON Data -- MetaLinks              341±   516K 
78: ZIP         XBRL Zipped Folder -- 0001097149-20-000049-xbrl      Zip    402K

‘EX-101.SCH’   —   XBRL Schema — algn-20200630

This Exhibit is an XBRL XML File.

                                                                                                                                                                                
<?xml version="1.0" encoding="windows-1252"?>
<!-- XBRL Document Created with Wdesk from Workiva -->
<!-- Copyright 2020 Workiva -->
<!-- r:609b6b09-46f5-4fab-83cb-0515358fad86,g:7feea158-4ee3-4eb2-b7a4-6e24c82ddd2a -->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:algn="http://www.aligntech.com/20200630" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:num="http://www.xbrl.org/dtr/type/numeric" attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://www.aligntech.com/20200630">
<xs:import namespace="http://fasb.org/srt/2019-01-31" schemaLocation="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd"/>
<xs:import namespace="http://fasb.org/us-gaap/2019-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd"/>
<xs:import namespace="http://www.w3.org/1999/xlink" schemaLocation="http://www.xbrl.org/2003/xlink-2003-12-31.xsd"/>
<xs:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd"/>
<xs:import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd"/>
<xs:import namespace="http://www.xbrl.org/dtr/type/non-numeric" schemaLocation="http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd"/>
<xs:import namespace="http://www.xbrl.org/dtr/type/numeric" schemaLocation="http://www.xbrl.org/dtr/type/numeric-2009-12-16.xsd"/>
<xs:import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd"/>
<xs:import namespace="http://xbrl.sec.gov/country/2017-01-31" schemaLocation="https://xbrl.sec.gov/country/2017/country-2017-01-31.xsd"/>
<xs:import namespace="http://xbrl.sec.gov/currency/2019-01-31" schemaLocation="https://xbrl.sec.gov/currency/2019/currency-2019-01-31.xsd"/>
<xs:import namespace="http://xbrl.sec.gov/dei/2019-01-31" schemaLocation="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd"/>
<xs:annotation>
<xs:appinfo>
<link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="algn-20200630_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:type="simple"/>
<link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="algn-20200630_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:type="simple"/>
<link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="algn-20200630_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:type="simple"/>
<link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="algn-20200630_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:type="simple"/>
<link:roleType id="CoverPage" roleURI="http://www.aligntech.com/role/CoverPage">
<link:definition> 0001001 - Document - Cover Page </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="CONDENSEDCONSOLIDATEDSTATEMENTSOFOPERATIONS" roleURI="http://www.aligntech.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFOPERATIONS">
<link:definition> 1001002 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="CONDENSEDCONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME" roleURI="http://www.aligntech.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME">
<link:definition> 1002003 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="CONDENSEDCONSOLIDATEDBALANCESHEETS" roleURI="http://www.aligntech.com/role/CONDENSEDCONSOLIDATEDBALANCESHEETS">
<link:definition> 1003004 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="CONDENSEDCONSOLIDATEDBALANCESHEETSParenthetical" roleURI="http://www.aligntech.com/role/CONDENSEDCONSOLIDATEDBALANCESHEETSParenthetical">
<link:definition> 1004005 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="CONDENSEDCONSOLIDATEDSTATEMENTSOFSTOCKHOLDERSEQUITY" roleURI="http://www.aligntech.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFSTOCKHOLDERSEQUITY">
<link:definition> 1005006 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="CONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWS" roleURI="http://www.aligntech.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWS">
<link:definition> 1006007 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="SummaryofSignificantAccountingPolicies" roleURI="http://www.aligntech.com/role/SummaryofSignificantAccountingPolicies">
<link:definition> 2101101 - Disclosure - Summary of Significant Accounting Policies </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="SummaryofSignificantAccountingPoliciesPolicies" roleURI="http://www.aligntech.com/role/SummaryofSignificantAccountingPoliciesPolicies">
<link:definition> 2202201 - Disclosure - Summary of Significant Accounting Policies (Policies) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="InvestmentsandFairValueMeasurements" roleURI="http://www.aligntech.com/role/InvestmentsandFairValueMeasurements">
<link:definition> 2103102 - Disclosure - Investments and Fair Value Measurements </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="InvestmentsandFairValueMeasurementsTables" roleURI="http://www.aligntech.com/role/InvestmentsandFairValueMeasurementsTables">
<link:definition> 2304301 - Disclosure - Investments and Fair Value Measurements (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="InvestmentsandFairValueMeasurementsShortTermandLongTermMarketableSecuritiesDetails" roleURI="http://www.aligntech.com/role/InvestmentsandFairValueMeasurementsShortTermandLongTermMarketableSecuritiesDetails">
<link:definition> 2405401 - Disclosure - Investments and Fair Value Measurements Short-Term and Long-Term Marketable Securities (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="InvestmentsandFairValueMeasurementsAdditionalInformationDetails" roleURI="http://www.aligntech.com/role/InvestmentsandFairValueMeasurementsAdditionalInformationDetails">
<link:definition> 2406402 - Disclosure - Investments and Fair Value Measurements Additional Information (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="InvestmentsandFairValueMeasurementsSummaryofFinancialAssetsMeasuredatFairValueonRecurringBasisDetails" roleURI="http://www.aligntech.com/role/InvestmentsandFairValueMeasurementsSummaryofFinancialAssetsMeasuredatFairValueonRecurringBasisDetails">
<link:definition> 2407403 - Disclosure - Investments and Fair Value Measurements Summary of Financial Assets Measured at Fair Value on Recurring Basis (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="InvestmentsandFairValueMeasurementsDerivativeNotionalInstrumentsDetails" roleURI="http://www.aligntech.com/role/InvestmentsandFairValueMeasurementsDerivativeNotionalInstrumentsDetails">
<link:definition> 2408404 - Disclosure - Investments and Fair Value Measurements Derivative Notional Instruments (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="BalanceSheetComponents" roleURI="http://www.aligntech.com/role/BalanceSheetComponents">
<link:definition> 2109103 - Disclosure - Balance Sheet Components </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="BalanceSheetComponentsTables" roleURI="http://www.aligntech.com/role/BalanceSheetComponentsTables">
<link:definition> 2310302 - Disclosure - Balance Sheet Components (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="BalanceSheetComponentsInventoriesDetails" roleURI="http://www.aligntech.com/role/BalanceSheetComponentsInventoriesDetails">
<link:definition> 2411405 - Disclosure - Balance Sheet Components Inventories (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="BalanceSheetComponentsPrepaidExpensesandOtherCurrentAssetsDetails" roleURI="http://www.aligntech.com/role/BalanceSheetComponentsPrepaidExpensesandOtherCurrentAssetsDetails">
<link:definition> 2412406 - Disclosure - Balance Sheet Components Prepaid Expenses and Other Current Assets (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="BalanceSheetComponentsAccruedLiabilitiesDetails" roleURI="http://www.aligntech.com/role/BalanceSheetComponentsAccruedLiabilitiesDetails">
<link:definition> 2413407 - Disclosure - Balance Sheet Components Accrued Liabilities (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="BalanceSheetComponentsWarrantyAccrualActivityDetails" roleURI="http://www.aligntech.com/role/BalanceSheetComponentsWarrantyAccrualActivityDetails">
<link:definition> 2414408 - Disclosure - Balance Sheet Components Warranty Accrual Activity (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="BalanceSheetComponentsDeferredRevenuesDetails" roleURI="http://www.aligntech.com/role/BalanceSheetComponentsDeferredRevenuesDetails">
<link:definition> 2415409 - Disclosure - Balance Sheet Components Deferred Revenues (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="BalanceSheetComponentsNarrativeDetails" roleURI="http://www.aligntech.com/role/BalanceSheetComponentsNarrativeDetails">
<link:definition> 2416410 - Disclosure - Balance Sheet Components Narrative (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="BalanceSheetComponentsNarrativeDetails_1" roleURI="http://www.aligntech.com/role/BalanceSheetComponentsNarrativeDetails_1">
<link:definition> 2416410 - Disclosure - Balance Sheet Components Narrative (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="BusinessCombinations" roleURI="http://www.aligntech.com/role/BusinessCombinations">
<link:definition> 2117104 - Disclosure - Business Combinations </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="BusinessCombinationsDetails" roleURI="http://www.aligntech.com/role/BusinessCombinationsDetails">
<link:definition> 2418411 - Disclosure - Business Combinations (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="GoodwillandLonglivedAssets" roleURI="http://www.aligntech.com/role/GoodwillandLonglivedAssets">
<link:definition> 2119105 - Disclosure - Goodwill and Long-lived Assets </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="GoodwillandIntangibleAssetsTables" roleURI="http://www.aligntech.com/role/GoodwillandIntangibleAssetsTables">
<link:definition> 2320303 - Disclosure - Goodwill and Intangible Assets (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="GoodwillandIntangibleAssetsChangeinCarryingValueofGoodwillDetails" roleURI="http://www.aligntech.com/role/GoodwillandIntangibleAssetsChangeinCarryingValueofGoodwillDetails">
<link:definition> 2421412 - Disclosure - Goodwill and Intangible Assets - Change in Carrying Value of Goodwill (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="GoodwillandIntangibleAssetsIntangibleAssetsDetails" roleURI="http://www.aligntech.com/role/GoodwillandIntangibleAssetsIntangibleAssetsDetails">
<link:definition> 2422413 - Disclosure - Goodwill and Intangible Assets - Intangible Assets (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="GoodwillandIntangibleAssetsTotalEstimatedAnnualFutureAmortizationExpenseforAcquiredIntangibleAssetsDetails" roleURI="http://www.aligntech.com/role/GoodwillandIntangibleAssetsTotalEstimatedAnnualFutureAmortizationExpenseforAcquiredIntangibleAssetsDetails">
<link:definition> 2423414 - Disclosure - Goodwill and Intangible Assets - Total Estimated Annual Future Amortization Expense for Acquired Intangible Assets (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="GoodwillandIntangibleAssetsImpairmentofgoodwillDetails" roleURI="http://www.aligntech.com/role/GoodwillandIntangibleAssetsImpairmentofgoodwillDetails">
<link:definition> 2424415 - Disclosure - Goodwill and Intangible Assets - Impairment of goodwill (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="GoodwillandIntangibleAssetsNarrativeDetails" roleURI="http://www.aligntech.com/role/GoodwillandIntangibleAssetsNarrativeDetails">
<link:definition> 2425416 - Disclosure - Goodwill and Intangible Assets - Narrative (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="EquityMethodInvestments" roleURI="http://www.aligntech.com/role/EquityMethodInvestments">
<link:definition> 2126106 - Disclosure - Equity Method Investments </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="EquityMethodInvestmentsDetails" roleURI="http://www.aligntech.com/role/EquityMethodInvestmentsDetails">
<link:definition> 2427417 - Disclosure - Equity Method Investments (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="CreditFacilities" roleURI="http://www.aligntech.com/role/CreditFacilities">
<link:definition> 2128107 - Disclosure - Credit Facilities </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="CreditFacilitiesAdditionalInformationDetails" roleURI="http://www.aligntech.com/role/CreditFacilitiesAdditionalInformationDetails">
<link:definition> 2429418 - Disclosure - Credit Facilities - Additional Information (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="ImpairmentsandOtherGainsCharges" roleURI="http://www.aligntech.com/role/ImpairmentsandOtherGainsCharges">
<link:definition> 2130108 - Disclosure - Impairments and Other (Gains) Charges </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="ImpairmentsandOtherGainsChargesDetails" roleURI="http://www.aligntech.com/role/ImpairmentsandOtherGainsChargesDetails">
<link:definition> 2431419 - Disclosure - Impairments and Other (Gains) Charges (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="LegalProceedings" roleURI="http://www.aligntech.com/role/LegalProceedings">
<link:definition> 2132109 - Disclosure - Legal Proceedings </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="LegalProceedingsNarrativeDetails" roleURI="http://www.aligntech.com/role/LegalProceedingsNarrativeDetails">
<link:definition> 2433420 - Disclosure - Legal Proceedings - Narrative (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="CommitmentsandContingencies" roleURI="http://www.aligntech.com/role/CommitmentsandContingencies">
<link:definition> 0102110 - Document - Commitments and Contingencies </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="CommitmentsandContingenciesOtherCommitmentsDetails" roleURI="http://www.aligntech.com/role/CommitmentsandContingenciesOtherCommitmentsDetails">
<link:definition> 2434421 - Disclosure - Commitments and Contingencies - Other Commitments (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="StockholdersEquity" roleURI="http://www.aligntech.com/role/StockholdersEquity">
<link:definition> 2135111 - Disclosure - Stockholders' Equity </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="StockholdersEquityTables" roleURI="http://www.aligntech.com/role/StockholdersEquityTables">
<link:definition> 2336304 - Disclosure - Stockholders' Equity (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="StockholdersEquityAdditionalInformationDetails" roleURI="http://www.aligntech.com/role/StockholdersEquityAdditionalInformationDetails">
<link:definition> 2437422 - Disclosure - Stockholders' Equity - Additional Information (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="StockholdersEquityStockBasedCompensationExpenseRelatedtoAllStockBasedAwardsandEmployeeStockPurchasesDetails" roleURI="http://www.aligntech.com/role/StockholdersEquityStockBasedCompensationExpenseRelatedtoAllStockBasedAwardsandEmployeeStockPurchasesDetails">
<link:definition> 2438423 - Disclosure - Stockholders' Equity - Stock-Based Compensation Expense Related to All Stock-Based Awards and Employee Stock Purchases (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="StockholdersEquitySummaryofNonvestedSharesDetails" roleURI="http://www.aligntech.com/role/StockholdersEquitySummaryofNonvestedSharesDetails">
<link:definition> 2439424 - Disclosure - Stockholders' Equity - Summary of Nonvested Shares (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="StockholdersEquitySummaryofMSUPerformanceDetails" roleURI="http://www.aligntech.com/role/StockholdersEquitySummaryofMSUPerformanceDetails">
<link:definition> 2440425 - Disclosure - Stockholders' Equity - Summary of MSU Performance (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="StockholdersEquityStockbasedCompensationEmployeeStockPurchasePlanDetails" roleURI="http://www.aligntech.com/role/StockholdersEquityStockbasedCompensationEmployeeStockPurchasePlanDetails">
<link:definition> 2441426 - Disclosure - Stockholders' Equity - Stock-based Compensation Employee Stock Purchase Plan (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="CommonStockRepurchasePrograms" roleURI="http://www.aligntech.com/role/CommonStockRepurchasePrograms">
<link:definition> 2142112 - Disclosure - Common Stock Repurchase Programs </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="CommonStockRepurchaseProgramsAdditionalInformationDetails" roleURI="http://www.aligntech.com/role/CommonStockRepurchaseProgramsAdditionalInformationDetails">
<link:definition> 2443427 - Disclosure - Common Stock Repurchase Programs - Additional Information (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="AccountingforIncomeTaxes" roleURI="http://www.aligntech.com/role/AccountingforIncomeTaxes">
<link:definition> 2144113 - Disclosure - Accounting for Income Taxes </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="AccountingforIncomeTaxesAdditionalInformationDetails" roleURI="http://www.aligntech.com/role/AccountingforIncomeTaxesAdditionalInformationDetails">
<link:definition> 2445428 - Disclosure - Accounting for Income Taxes - Additional Information (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="NetIncomePerShare" roleURI="http://www.aligntech.com/role/NetIncomePerShare">
<link:definition> 2146114 - Disclosure - Net Income Per Share </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="NetIncomePerShareTables" roleURI="http://www.aligntech.com/role/NetIncomePerShareTables">
<link:definition> 2347305 - Disclosure - Net Income Per Share (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="ComputationofBasicandDilutedNetIncomePerShareAttributabletoCommonStockDetails" roleURI="http://www.aligntech.com/role/ComputationofBasicandDilutedNetIncomePerShareAttributabletoCommonStockDetails">
<link:definition> 2448429 - Disclosure - Computation of Basic and Diluted Net Income Per Share Attributable to Common Stock (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="SupplementalCashFlowInformation" roleURI="http://www.aligntech.com/role/SupplementalCashFlowInformation">
<link:definition> 2149115 - Disclosure - Supplemental Cash Flow Information </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="SupplementalCashFlowInformationTables" roleURI="http://www.aligntech.com/role/SupplementalCashFlowInformationTables">
<link:definition> 2350306 - Disclosure - Supplemental Cash Flow Information (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="SupplementalCashFlowInformationDetail" roleURI="http://www.aligntech.com/role/SupplementalCashFlowInformationDetail">
<link:definition> 2451430 - Disclosure - Supplemental Cash Flow Information (Detail) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="SegmentsandGeographicalInformation" roleURI="http://www.aligntech.com/role/SegmentsandGeographicalInformation">
<link:definition> 2152116 - Disclosure - Segments and Geographical Information </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="SegmentsandGeographicalInformationTables" roleURI="http://www.aligntech.com/role/SegmentsandGeographicalInformationTables">
<link:definition> 2353307 - Disclosure - Segments and Geographical Information (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="SegmentsandGeographicalInformationAdditionalInformationDetails" roleURI="http://www.aligntech.com/role/SegmentsandGeographicalInformationAdditionalInformationDetails">
<link:definition> 2454431 - Disclosure - Segments and Geographical Information - Additional Information (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="SegmentsandGeographicalInformationSegmentInformationDetails" roleURI="http://www.aligntech.com/role/SegmentsandGeographicalInformationSegmentInformationDetails">
<link:definition> 2455432 - Disclosure - Segments and Geographical Information - Segment Information (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="SegmentsandGeographicalInformationNetRevenuesbyGeographicAreaDetails" roleURI="http://www.aligntech.com/role/SegmentsandGeographicalInformationNetRevenuesbyGeographicAreaDetails">
<link:definition> 2456433 - Disclosure - Segments and Geographical Information - Net Revenues by Geographic Area (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="SegmentsandGeographicalInformationLongLivedAssetsbyGeographicAreaDetails" roleURI="http://www.aligntech.com/role/SegmentsandGeographicalInformationLongLivedAssetsbyGeographicAreaDetails">
<link:definition> 2457434 - Disclosure - Segments and Geographical Information - Long-Lived Assets by Geographic Area (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
</xs:appinfo>
</xs:annotation>
<xs:element id="algn_TrademarksAndTradenamesMember" abstract="true" name="TrademarksAndTradenamesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
<xs:element id="algn_MarketableSecuritiesWeightedAverageRemainingMaturityAtPeriodEnd" abstract="false" name="MarketableSecuritiesWeightedAverageRemainingMaturityAtPeriodEnd" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
<xs:element id="algn_DisclosureSummaryOfFinancialAssetsMeasuredAtFairValueOnRecurringBasisAbstract" abstract="true" name="DisclosureSummaryOfFinancialAssetsMeasuredAtFairValueOnRecurringBasisAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="algn_ExistingTechnologyMember" abstract="true" name="ExistingTechnologyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
<xs:element id="algn_MarketPerformanceBasedRestrictedStockUnitsMember" abstract="true" name="MarketPerformanceBasedRestrictedStockUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
<xs:element id="algn_DeferredRevenueMember" abstract="true" name="DeferredRevenueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
<xs:element id="algn_SDCMember" abstract="true" name="SDCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
<xs:element id="algn_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTable" abstract="true" name="FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
<xs:element id="algn_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAxis" abstract="true" name="ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
<xs:element id="algn_InterestIncomeAndOtherIncomeExpenseNet" abstract="false" name="InterestIncomeAndOtherIncomeExpenseNet" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="algn_NumberOfClaimsFoundValid" abstract="false" name="NumberOfClaimsFoundValid" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
<xs:element id="algn_FinanceLeasePurchasePaymentRelatedToThirdPartyLease" abstract="false" name="FinanceLeasePurchasePaymentRelatedToThirdPartyLease" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="algn_CorporateBondsMember" abstract="true" name="CorporateBondsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
<xs:element id="algn_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherAssetsLiabilitiesNet" abstract="false" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherAssetsLiabilitiesNet" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="algn_PatentInfringementNumberofLawsuits" abstract="false" name="PatentInfringementNumberofLawsuits" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
<xs:element id="algn_NumberOfSection337Violations" abstract="false" name="NumberOfSection337Violations" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
<xs:element id="algn_PrepaidSoftwareAndMaintenance" abstract="false" name="PrepaidSoftwareAndMaintenance" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="algn_TaxRelatedReceivables" abstract="false" name="TaxRelatedReceivables" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="algn_CashPaidToAcquireBusinessesPaymentOfDebt" abstract="false" name="CashPaidToAcquireBusinessesPaymentOfDebt" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="algn_StockIncentivePlan2005Member" abstract="true" name="StockIncentivePlan2005Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
<xs:element id="algn_OtherInternationalMember" abstract="true" name="OtherInternationalMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
<xs:element id="algn_DisclosureAccountingForIncomeTaxesAdditionalInformationAbstract" abstract="true" name="DisclosureAccountingForIncomeTaxesAdditionalInformationAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="algn_PurchaseOfFinanceLease" abstract="false" name="PurchaseOfFinanceLease" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="algn_ShareholderDerivativeLawsuitMember" abstract="true" name="ShareholderDerivativeLawsuitMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
<xs:element id="algn_ExocadAcquisitionMember" abstract="true" name="ExocadAcquisitionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
<xs:element id="algn_FiniteLivedIntangibleAssetsAccumulatedImpairmentLoss" abstract="false" name="FiniteLivedIntangibleAssetsAccumulatedImpairmentLoss" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="algn_NotesIssuedIssuedInSaleOfEquityMethodInvestment" abstract="false" name="NotesIssuedIssuedInSaleOfEquityMethodInvestment" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="algn_ShareRepurchasesLineItems" abstract="true" name="ShareRepurchasesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="algn_PercentageOfMarketPerformanceBasedRestrictedStockUnitsDuringVestingPeriod" abstract="false" name="PercentageOfMarketPerformanceBasedRestrictedStockUnitsDuringVestingPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="num:percentItemType"/>
<xs:element id="algn_AcceleratedStockRepurchaseAgreement2019ASRMember" abstract="true" name="AcceleratedStockRepurchaseAgreement2019ASRMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
<xs:element id="algn_CashPaidForAmountsIncludedInTheMeasurementOfLeaseLiabilitiesAbstract" abstract="true" name="CashPaidForAmountsIncludedInTheMeasurementOfLeaseLiabilitiesAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="algn_NotesToFinancialStatementsAbstract" abstract="true" name="NotesToFinancialStatementsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="algn_A2018ASRMember" abstract="true" name="A2018ASRMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
<xs:element id="algn_EffectiveIncomeTaxRateReconciliationTaxBenefitOnTransferOfAssetsAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationTaxBenefitOnTransferOfAssetsAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="algn_DisclosureCreditFacilitiesAdditionalInformationAbstract" abstract="true" name="DisclosureCreditFacilitiesAdditionalInformationAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="algn_RightOfUseAssetsObtainedInExchangeForLeaseObligationsAbstract" abstract="true" name="RightOfUseAssetsObtainedInExchangeForLeaseObligationsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="algn_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisLineItems" abstract="true" name="FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="algn_CreditFacility2020Member" abstract="true" name="CreditFacility2020Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
<xs:element id="algn_DisclosureSegmentInformationAbstract" abstract="true" name="DisclosureSegmentInformationAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="algn_DebtSecuritiesMaximumEffectiveMaturityPeriod" abstract="false" name="DebtSecuritiesMaximumEffectiveMaturityPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
<xs:element id="algn_DisclosureTotalEstimatedAnnualFutureAmortizationExpenseForAcquiredIntangibleAssetsAbstract" abstract="true" name="DisclosureTotalEstimatedAnnualFutureAmortizationExpenseForAcquiredIntangibleAssetsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="algn_LesseeOperatingLeasesNoncashOperatingCosts" abstract="false" name="LesseeOperatingLeasesNoncashOperatingCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="algn_ClearAlignerMember" abstract="true" name="ClearAlignerMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
<xs:element id="algn_NumberOfPatentsWithSection337Violations" abstract="false" name="NumberOfPatentsWithSection337Violations" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
<xs:element id="algn_DecreaseInEquityMethodInvestmentsDerecognizedOnArbitration" abstract="false" name="DecreaseInEquityMethodInvestmentsDerecognizedOnArbitration" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="algn_ESPPMember" abstract="true" name="ESPPMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
<xs:element id="algn_CommonStockCapitalSharesReservedForFutureIssuanceSharesAvailable" abstract="false" name="CommonStockCapitalSharesReservedForFutureIssuanceSharesAvailable" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
<xs:element id="algn_May2018RepurchaseMember" abstract="true" name="May2018RepurchaseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
<xs:element id="algn_PropertyPlantAndEquipmentAndROUAssets" abstract="false" name="PropertyPlantAndEquipmentAndROUAssets" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="algn_EmployeeStockPurchasePlanMember" abstract="true" name="EmployeeStockPurchasePlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
<xs:element id="algn_CreditFacility2018Member" abstract="true" name="CreditFacility2018Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
<xs:element id="algn_DisclosureCommonStockRepurchaseProgramAdditionalInformationAbstract" abstract="true" name="DisclosureCommonStockRepurchaseProgramAdditionalInformationAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="algn_DisclosureChangeInCarryingValueOfGoodwillAbstract" abstract="true" name="DisclosureChangeInCarryingValueOfGoodwillAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="algn_AccruedExpenses" abstract="false" name="AccruedExpenses" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="algn_StockRepurchaseProgramDisclosureTextBlock" abstract="false" name="StockRepurchaseProgramDisclosureTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType"/>
<xs:element id="algn_ImagingSystemsAndCADCAMServicesMember" abstract="true" name="ImagingSystemsAndCADCAMServicesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
<xs:element id="algn_DisclosureIntangibleAssetsAsDirectResultFromCadentAcquisitionAbstract" abstract="true" name="DisclosureIntangibleAssetsAsDirectResultFromCadentAcquisitionAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="algn_IsraeliSeveranceFundsMember" abstract="true" name="IsraeliSeveranceFundsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
<xs:element id="algn_ShareBasedCompensationArrangementsByShareBasedPaymentAwardDomain" abstract="true" name="ShareBasedCompensationArrangementsByShareBasedPaymentAwardDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
<xs:element id="algn_EmployeeStockPurchasePlan2010Member" abstract="true" name="EmployeeStockPurchasePlan2010Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
<xs:element id="algn_DisclosureShortTermAndLongTermMarketableSecuritiesAbstract" abstract="true" name="DisclosureShortTermAndLongTermMarketableSecuritiesAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="algn_TaxWithholdingRelatedToVestingOfEquityAwards" abstract="false" name="TaxWithholdingRelatedToVestingOfEquityAwards" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="algn_ShareRepurchasesTable" abstract="true" name="ShareRepurchasesTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
<xs:element id="algn_PatentInfringementby3ShapeMember" abstract="true" name="PatentInfringementby3ShapeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
<xs:element id="algn_LegalProceedingsAbstract" abstract="true" name="LegalProceedingsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
</xs:schema>

↑Top
Filing Submission 0001097149-20-000049   –   Alternative Formats (Word / Rich Text, HTML, Plain Text, et al.)
Copyright © 2024 Fran Finnegan & Company LLC – All Rights Reserved.
About — Privacy — Redactions — Help — Sun., Apr. 28, 7:04:33.1am ET