Legal 75
Eachtimeyouconveyacoveredwork,therecipientautomaticallyreceivesalicensefromtheoriginal
licensors,torun,modifyandpropagatethatwork,subjecttothisLicense.Youarenotresponsiblefor
enforcingcompliancebythirdpartieswiththisLicense.
An“entitytransaction”isatransactiontransferringcontrolofanorganization,orsubstantiallyall
assetsofone,orsubdividinganorganization,ormergingorganizations.Ifpropagationofacovered
workresultsfromanentitytransaction,eachpartytothattransactionwhoreceivesacopyofthe
workalsoreceiveswhateverlicensestotheworktheparty'spredecessorininteresthadorcould
giveunderthepreviousparagraph,plusarighttopossessionoftheCorrespondingSourceofthe
workfromthepredecessorininterest,ifthepredecessorhasitorcangetitwithr easonableefforts.
Youmaynotimposeanyfurtherrestrictionsontheexerciseoftherightsgrantedoraffirmedunder
thisLicense.Forexample,youmaynotimposealicensefee,royalty,orotherchargeforexerciseof
rightsgrantedunderthisLicense,andyoumaynotinitiatelitigation(includingacross-claimor
counterclaiminalawsuit)allegingthatanypatentclaimisinfringedbymaking,using,selling,offering
forsale,orimportingtheProgramoranyportionofit.
11. Patents.
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”.
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thisdefinition,“control”includestherighttograntpatentsublicensesinamanner
consistentwiththerequirementsofthisLicense.
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.
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.
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w orkinacountry,wouldinfringe
oneormoreidentifiablepatentsinthatcountrythatyouhavereasontobelievearevalid.