Specifications

A“contributor”isacopyrightholderwhoauthorizesuseunderthisLicenseoftheProgram
oraworkonwhichtheProgramisbased.Theworkthuslicensediscalledthecontributor's
“contributorversion”.
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Acontributor's“essentialpatentclaims”areallpatentclaimsownedorcontrolledbythe
contributor,whetheralreadyacquiredorhereafteracquired,thatwouldbeinfringedby
somemanner,permittedbythisLicense,ofmaking,using,orsellingitscontributorversion,
butdonotincludeclaimsthatwouldbeinfringedonlyasaconsequenceoffurther
modificationofthecontributorversion.Forpurposesofthi sdefinition,“control”includes
therighttograntpatentsublicensesinamannerconsistentwiththerequirementsofthis
License.
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Eachcontributorgrantsyouanon‐exclusive,worldwide,royalty‐freepatentlicenseunder
thecontributor'sessentialpatentclaims,tomake,use,sell,offerforsale,importand
otherwiserun,modifyandpropagatethecontentsofitscontributorversion.
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Inthefollowingthreeparagraphs,a“patentlicense”isanyexpressagreementor
commitment,howeverdenominated,nottoenforceapatent(suchasanexpress
permissiontopracticeapatentorcovenantnottosueforpatentinfringement).To“grant”
suchapatentlicensetoapartymeanstomakesuchanagreementorcommitmentnotto
enforceapatentagainsttheparty.
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Ifyouconveyacoveredwork,knowinglyrelyingonapatentlicense,andthe
CorrespondingSourceoftheworkisnotavailableforanyonetocopy,freeofchargeand
underthetermsofthisLicense,throughapubliclyavailablenetworkserverorother
readilyaccessiblemeans,thenyoumusteither(1)causetheCorrespondingSourcetobe
soavailable,or(2)arrangetodepriveyourselfofthebenefitofthepatentlicenseforthis
particularwork,or(3)arrange,inamannerconsistentwiththerequirementsofthis
License,toextendthepatentlicensetodownstreamrecipients.“Knowinglyrelying”means
youhaveactualknowledgethat,butforthepatentlicense,yourconveyingthecovered
workinacountry,oryourrecipient'suseofthecoveredworkinacountry,wouldinfringe
oneormoreidentifiablepatentsinthatcountrythatyouhavereasontobelievearevalid.
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If,pursuanttoorinconnectionwithasingletransactionorarrangement,youconvey,or
propagatebyprocuringconveyanceof,acoveredwork,andgrantapatentlicensetosome
ofthepartiesreceivingthecoveredworkauthorizingthemtouse,propagate,modifyor
conveyaspecificcopyofthecoveredwork,thenthepatentlicenseyougrantis
automaticallyextendedtoallrecipientsofthecoveredworkandworksbasedonit.
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