Software patents and free software: Difference between revisions

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|publisher=groklaw
| date=2007-10-11
| access-date=2007-10-12}}</ref><ref>The U.S. patent 5,072,412 concerns the desktop User Interface, see [https://web.archive.org/web/20110412231750/http://www.google.com/patents?id=3tUkAAAAEBAJ&dq=5,072,412 here]</ref> However, IP Innovation LLC is a subsidiary of a company classified by some as a [[patent troll]],<ref>{{cite web
|url = http://www.linux-watch.com/news/NS2013674721.html
|archive-url = https://archive.today/20130103223944/http://www.linux-watch.com/news/NS2013674721.html