On September 16, 2012, a number of provisions set out in the America Invents Act relating to US patent law became effective. As a consequence, PCT applications filed on or after 16 September 2012, will no longer have a requirement that inventors be named as applicants solely for the purposes of the U.S. designation. However, U.S. national law will still require that a U.S. inventor’s oath or declaration be submitted for national phase. Additionally, on September 16 also other significant changes came into force that make certain new procedures available for applicants and third parties. These procedures include third parties preissuance submissions, supplemental examination, inter partes review, and post-grant review. In other words, from this date it is possible to file third party observations against the grant of patents and start proceedings that have some similarity to the European oppositions against granted patents.

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