Posts Tagged: prosecution laches


Are 5% of All U.S. Issued Patents Presumed to Be Unenforceable Under Laches Due to Their Priority Claims?

Laches is an equitable defense that may be raised in a patent-related proceeding. If a defending party can show that a patent holder exhibited unreasonable delay that …
By Kate Gaudry
5 months ago 7

After Hyatt v. Hirshfeld, it Might Be Time to Pay Attention to Prosecution Laches

Gilbert Hyatt was one of many applicants who filed many patent applications shortly before the June 8, 1995 transition point, where patent terms transitioned from being defined based on 17 …
By Kate Gaudry
6 months ago 13