Magma(R) Design Automation Inc. announced today that the U.S. Patent and Trademark Office (PTO) will reexamine U.S. Patent No. 6,725,438 (the'438 patent), one of three patents at issue in a lawsuit between Magma and Synopsys Inc. pending in the U.S. District Court in the Northern District of California. With this decision, the PTO is now in the process of reexamining two of the three patents in the lawsuit, and the PTO will soon decide whether it will reexamine the third.
The PTO is reexamining U.S. Patent Number 6,378,114 (the '114 patent), and in August rejected all 15 claims in that patent. The PTO was asked to reexamine the third patent, U.S. Patent Number 6,453,446 (the '446 patent), along with the '438 patent, and the PTO must determine whether it will proceed with re-examination of the '446 patent by February 10, 2007.