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:Further, this reference [http://www.epo.org/law-practice/legal-texts/html/epc/2010/e/ar89.html] implies that priority date does has influence on novelty but not protection timespan; which implies that the protection period ended 2011-05-16 for the Europe too. This is even recorded in the Swiss patent status [http://cjoint.com/11mi/AEBmZHaqouH.htm]. [[User:Fgrieu|Fgrieu]] ([[User talk:Fgrieu|talk]]) 15:40, 30 May 2011 (UTC)
::I think that this analysis contains way too much original research. We have to be careful not to seduce people to use IDEA as if it were in the public ___domain, and later it turns out that your analysis was wrong because of subtleties and people relying on Wikipedia face legal trouble. Let's keep 2011–2012 and January 7, 2012 to be on the safe side. Once there is some kind of official statement that licensing is no longer granted because of patent expiry, we can give a definitive date.--[[User:Rtc|rtc]] ([[User talk:Rtc|talk]]) 22:59, 31 May 2011 (UTC)
Avoiding the OR, this site [http://jce.iaik.tugraz.at/sic/Sales/Patent-Issues-Algorithms] has a wonderful list of many crypto patents and their expiration. For IDEA, it [http://jce.iaik.tugraz.at/sic/Sales/Patent-Issues-Algorithms#17 says] (I've added links to two of the patents that I could find):
:US Patent: 5,214,703[http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=5214703.PN.&OS=PN/5214703&RS=PN/5214703] expiry date 25.05.2010
:Europe Patent: EP0482154[http://ep.espacenet.com/publicationDetails/biblio?DB=ep.espacenet.com&adjacent=true&locale=en_EP&FT=D&date=19920429&CC=EP&NR=0482154A1&KC=A1] expiry date 16.05.2011
:Japan Patent: JP322544B2 expiry date 16.05.2011
This is consistent with my read of the two patent docs with links above. [[User:TJRC|TJRC]] ([[User talk:TJRC|talk]]) 23:29, 5 July 2011 (UTC)
== TODO list (now done!) ==
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