Patent term adjustment (PTA) is a process carried out by the United States Patent and Trademark Office (USPTO) for adding day-for-day credits to the normal twenty year term from the earliest priority date of a patent application based on delays in prosecution at the USPTO.

We assist attorneys in law firms and our Fortune 500 clients increase revenues by adding days, weeks, or even months to the term of the patent. We find a systematic review surfaces significant errors which may impact tens to hundreds of thousands of dollars by affecting the term of the patent.

MaxVal offers a systematic review of the USPTO’s PTA calculation, which often results in increased PTA.

Patent Term Adjustment Services

Key Features

  • We are experts on Patent Term Adjustment
  • We get you additional term by finding errors
  • Our audit team is trained and monitored by patent attorneys
  • We use proprietary processes using both electronic and human review developed in working with patent attorneys and clients
  • Our attorneys monitor court cases, statutes, and regulations for changes affecting PTA which the USPTO is often slow to implement
  • Cost effective
  • Fast and accurate

Access a sample of our PTA Calculation report.


Existing With MaxVal Savings
Client uses law firms (average $500/patent) $200/patent $300/patent
Internal resources $200/patent Significant


How PTA calculated

Patent Term Adjustment is calculated based on examiner and applicant delays during patent prosecution.

MaxVal’s PTA Wizard™

The easy to use do-it-yourself tool that helps you easily calculate the patent's PTA and compares it to the USPTO calculation.