Patent Law Practice Center

Semiconductor Patents Prominent among the Reexamination Requests the Week of 6/13/11

Here is the latest installment of Reexamination Requests from Scott Daniels, of Reexamination Alert and Practice Center Contributor….

Sony has requested reexamination of Tessera’s U.S. Patent No. 6,885,106 for stacking semiconductors (see inter partes Request No. (9)). The ‘106 patent is one of a large portfolio of chip-packaging patents that Tessera has successfully enforced over the past decade.

Other Requests involving semiconductor patents were a filed by Cypress Semiconductor against an Agilent patent and by Everspin against a Nexedge patent (see inter partes Request Nos. (7) & (8)).

Also of commercial significance was a reexamination requested by A123 against a Hydro-Quebec patent for lithium batteries (see inter partes Request No. (4)). The companies are in litigation in the Northern District of Texas over that patent. (more…)