| Abstract: | Legal context: The standard term of a US utility patent is twenty years fromits filing date, but the term may be extended for various reasons.The statutory Patent Term Adjustment (PTA) scheme automaticallyextends the term of a patent by the number of days of delayin prosecution attributable to the United States Patent andTrademark Office (USPTO), minus the number of days of delayattributable to the applicant. By avoiding actions or inactionsthat result in delay, a US patent applicant may maximize theterm of the resulting patent. This article is intended particularlyfor practitioners outside the US who are instructing a US practitioner. Key points: Delay by the applicant chiefly results when more than threemonths elapses from the mailing of a USPTO action or requirementto receipt of the applicant's response or when a paper is filedat an inappropriate time. Such delays may be avoided or minimizedby promptly sending instructions and required documents to theUS patent attorney or agent in charge of the case. Time spentin an ultimately successful appeal of a final rejection willincrease PTA. Errors in PTA calculations by the USPTO may becorrected upon filing a request. Practical significance: PTA can be a potent source of extended US patent term, especiallywhen the applicant takes care not to introduce delay into theexamination process. |
