Patent Term Adjustment (PTA) is additional patent term for U.S. patents to compensate for delay in issuance. The statute (35 U.S.C. § 154(b)) provides three bases for PTA: delayed response by the USPTO (“A delay”), failure to issue a patent within three years (“B delay”), and delay due to appeal (“C delay”). For C delay, patent term is extended for “appellate review by the Patent Trial and Appeal Board or by a Federal court in a case in which the patent was issued under a decision in the review reversing an adverse determination of patentability.”
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