Results for Prosecution laches
Gilbert P. Hyatt v. Andrew Hirshfeld
The PTO may assert a prosecution laches defense in an action under 35 U.S.C. § 145 when a patent applicant inexplicably and unreasonably delays prosecution of their patent application.
Personalized Media Communication, LLC. v. Apple, Inc.
A patent may be unenforceable due to prosecution laches when 1) a patentee’s delay in prosecution was unreasonable and inexcusable and 2) an accused infringer (or the public) suffered prejudice attributable to the delay.
Symbol Technologies Inc. v. Lemelson Medical, Education & Research Foundation LP
Declaratory defendant’s asserted patent claims are unenforceable under doctrine of prosecution laches, since defendant, through sequential filing of applications, delayed from 18 to 39 years in filing and prosecuting claims, and since such delay was unreasonable and unjustified.