Sisvel International S.A. v. Sierra Wireless, Inc.,, No. 22-1387 (Fed. Cir. 2023)Annotate this Case
Sisvel’s 698 and 196 patents claim methods and apparatuses that rely on the exchange of frequency information in connection with cell reselection between a mobile station (or user cell phone) and a central mobile switching center. Both are entitled “Cell Reselection Signalling Method.” The 196 patent is a continuation of the application that eventually gave rise to the 698 patent.
The Patent Trial and Appeal Board concluded that multiple claims in each patent are unpatentable as anticipated and/or obvious in view of certain prior art. Sisvel challenged the Board’s construction of a single claim term, “connection rejection message” and the Board’s denial of its revised motion to amend the claims of the 698 patent. The Federal Circuit affirmed, agreeing that “connection rejection message” should be given its plain and ordinary meaning of “a message that rejects a connection.” The Board correctly determined that Sisvel failed to meet its burden to show that the scope of its substitute claims is not broader than the scope of its original claims.