The standard term of a U.S. utility patent is 20 years from the earliest effective filing date. However, two mechanisms can add time to this baseline term: patent term adjustment (PTA) and patent term extension (PTE). Understanding these mechanisms is essential for maximizing the commercial value of your patent portfolio, particularly in industries where patent term is a critical component of business strategy \u2014 such as pharmaceuticals and medical devices. PerspireIP helps clients calculate, preserve, and challenge patent term adjustments as part of comprehensive portfolio management.<\/p>\n\n
Patent term adjustment compensates patent applicants for delays in the USPTO’s examination process that are attributable to the USPTO itself. Under 35 U.S.C. 154(b), the USPTO must adjust the patent term if the agency fails to meet certain examination timeliness standards. PTA is intended to ensure that applicants do not lose effective patent protection simply because the USPTO takes too long to examine their applications.<\/p>\n
The USPTO calculates and provides the PTA on the face of each issued patent. However, the USPTO’s calculation is not always correct, and applicants have the right to request reconsideration of PTA calculations \u2014 a right that PerspireIP routinely exercises on behalf of clients when we identify calculation errors.<\/p>\n\n
PTA is calculated based on three categories of delay, commonly called A-delay, B-delay, and C-delay.<\/p>\n
A-delay adds one day for each day the USPTO fails to meet specific examination timeliness requirements, including failing to mail a first office action within 14 months of the application filing date, failing to respond to an office action response within 4 months, failing to act on an appeal within 4 months of the decision, or failing to issue the patent within 4 months of the notice of allowance payment.<\/p>\n
B-delay adds one day for each day the application has been pending more than 3 years from the actual US filing date (not the priority date), with certain periods excluded such as time spent in an RCE, an appeal, or at the applicant’s request.<\/p>\n
C-delay compensates for delays caused by derivation proceedings, secrecy orders, or successful appeals. If you appeal an examiner’s rejection to the PTAB and the PTAB reverses the rejection, you receive credit for the time spent in the appeal process.<\/p>\n\n
The PTA calculation also subtracts delays attributable to the applicant. Common applicant delays that reduce patent term adjustment include failing to respond to an office action within 3 months of the mailing date (even with extension fees paid), filing an RCE, filing a continuation application, submitting an Information Disclosure Statement (IDS) after a first office action that lists references that were available at the time of filing, and requesting extensions of time for responses.<\/p>\n
Understanding how applicant behavior affects PTA is important for portfolio management. In patent families where long patent term is especially valuable, attorneys may advise responding to office actions as quickly as possible to minimize applicant-caused delays.<\/p>\n\n
The USPTO’s PTA calculation is printed on the face of every issued patent. Applicants have two months from the date of patent grant to file a request for reconsideration of the PTA calculation if they believe it is incorrect. PerspireIP routinely reviews PTA calculations for clients upon patent issuance and files reconsideration requests when we identify errors. Common errors include incorrect calculation of A-delay periods, improper attribution of delays to the applicant rather than the USPTO, and mathematical calculation errors.<\/p>\n
If the USPTO denies your reconsideration request, you may appeal the PTA determination to the United States District Court for the Eastern District of Virginia within 180 days of the denial. Several companies have successfully won additional patent term through such appeals, including cases that resulted in months of additional protection worth millions of dollars in pharmaceutical markets.<\/p>\n\n
Patent term extension is a separate mechanism from PTA that is specifically available to pharmaceutical products, medical devices, food additives, color additives, and animal drugs that required FDA regulatory review before commercial marketing. Under 35 U.S.C. 156, a patent covering one of these regulated products may be extended to compensate for time lost during the FDA regulatory review process.<\/p>\n
PTE can add up to 5 years to the patent term, with the extended term not exceeding 14 years of remaining patent term after regulatory approval. For pharmaceutical patents, this can represent hundreds of millions of dollars in additional revenue from exclusive marketing rights.<\/p>\n\n
To obtain a patent term extension, you must file an application with the USPTO within 60 days of the FDA’s approval of the product. The application must identify the specific patent being extended, the regulatory review period, and the first permitted commercial marketing date. Only one patent per regulatory approval can be extended, and the patent must claim the active ingredient of the approved product (or a method of use or manufacture of the active ingredient). The USPTO and FDA jointly evaluate PTE applications, and the process can take 2-3 years.<\/p>\n\n
For pharmaceutical companies, every additional day of patent term translates directly into revenue. A blockbuster drug generating $5 million per day in sales has $1.825 billion in annual value \u2014 making even a few months of additional patent term enormously important. Pharmaceutical patent portfolio management includes both optimizing PTA during prosecution (by minimizing applicant-caused delays) and securing PTE after FDA approval to maximize the exclusivity period.<\/p>\n\n
PerspireIP provides comprehensive patent term adjustment and extension services. We calculate PTA during prosecution to advise on response timing, review USPTO PTA calculations upon issuance and file reconsideration requests where appropriate, and assist pharmaceutical and medical device clients with PTE applications following FDA approval. Our goal is to ensure that every day of patent protection you are entitled to is preserved.<\/p>\n\n
Patent term adjustment and patent term extension are powerful mechanisms for maximizing the commercial value of your patents. Understanding how PTA is calculated, how to minimize applicant delays, and when to challenge USPTO calculations is essential for any serious patent portfolio strategy. PerspireIP has the expertise to help you capture every day of patent term you are entitled to. Contact us today to review your portfolio for PTA and PTE opportunities.<\/p>","protected":false},"excerpt":{"rendered":"
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