Interference proceeding
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In United States patent law, an interference proceeding, also known as a priority contest, is an inter partes proceeding to determine the priority issues of multiple patent applications. Unlike in most other countries, which have long had a first-to-file system, until the enactment of the Leahy–Smith America Invents Act (AIA) in 2011, the United States operated under a first-to-invent. The interference proceeding determines which of several patent applications had been made by the first inventor. The AIA switched the US to a first-to-file regime effective March 16, 2013, and interferences apply only to patent applications with an effective filing date prior to that change.
In United States patent law, an interference proceeding, also known as a priority contest, is an inter partes proceeding to determine the priority issues of multiple patent applications. Unlike in most other countries, which have long had a first-to-file system, until the enactment of the Leahy–Smith America Invents Act (AIA) in 2011, the United States operated under a first-to-invent. The interference proceeding determines which of several patent applications had been made by the first inventor. The AIA switched the US to a first-to-file regime effective March 16, 2013, and interferences apply only to patent applications with an effective filing date prior to that change. ==References==
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