Congress set the patent term at twenty years from the earliest effective filing date. 35 U.S.C. § 154(a)(2) (not counting provisional or foreign national filing). But that statutory baseline is just the starting point. But, the actual term is shaped by a series of prosecution decisions, USPTO delays, terminal disclaimers, and patent family structure.
In an ideal world, issued patents would not contain errors. In reality, patent drafting is tedious and time-consuming work and perfection is not an attainable goal. The patent industry seems to be steadily getting better, though. In a recent study, we uncovered an 11.24% decrease in errors per patent over the past four years. We observed this decrease by reviewing every patent issued by the U.S. Patent and Trademark Office (USPTO) since 2020 - nearly 1.4 million patents.
The case centers on the "Martin" reference, a patent application covering LED technology that was filed on April 16, 2003 and published on October 21, 2004. Martin was later abandoned and never became a patent. Lynk Labs' '400 patent claims a priority date of February 25, 2004, placing it squarely in the gap between Martin's filing and publication dates. Samsung successfully used Martin to challenge claims of the '400 patent as obvious in IPR.
Regents of the University of California ("Regents") and Broad Institute were engaged in a patent interference proceeding involving the adaptation of CRISPR systems to edit eukaryotic DNA. Both parties were engaged in extensive testing related to editing eukaryotic DNA during the time of the invention, and both filed multiple patent applications that became the subjects of the patent interference proceedings.