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Federal Circuit Upholds PTAB Invalidation of Search Engine Patent Asserted Against Facebook, LinkedIn, and Twitter
The Federal Circuit has affirmed a Patent Trial and Appeal Board (PTAB) decision that invalidated all challenged claims in a search engine patent (5,544,352) asserted by Software Rights Archive, LLC (SRA). In a short, per curiam order issued on May 17 without an accompanying opinion (2015-1648), the court upheld the PTAB’s February 2015 ruling in an inter partes review (IPR) proceeding jointly filed by Facebook, LinkedIn, and Twitter (IPR2013-00478), in which the Board held that claims 26, 28-30, 32, 34, and 39 of the ‘352 patent are obvious in light of three academic publications by Edward A. Fox, a computer science professor at Virginia Tech. (The PTAB declined to find the same claims invalid on the other two asserted grounds, anticipation and obviousness over three other scholarly articles.)
May 20, 2016
Q4 2015 RPX Activity Report
In the fourth quarter of 2015, four patent transfers to RPX were recorded with the USPTO.
February 22, 2016