The America Invents Act (AIA) instituted sweeping changes in U.S. patent law, including creating new proceedings for third parties to challenge an issued patent before the Patent Trial and Appeal Board (PTAB). These new proceedings—inter partes review (IPR), post-grant review (PGR) and covered business method (CBM) review—became available on Sept. 16, 2012, and have been frequently and successfully used to invalidate patent claims.
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Originally published by Bloomberg BNA's Patent, Trademark & Copyright Journal
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