Tellabs Operations, Inc. v. Fujitsu Ltd.

*376MEMORANDUM OPINION AND ORDER

JEFFREY COLE, United States Magistrate Judge.

INTRODUCTION

In January 2008, Fujitsu Limited (“Fujitsu”) filed suit against Tellabs Operations, Inc. (“Tellabs”) in the Eastern District of Texas, charging it with infringing three of Fujitsu’s patents for optical amplifiers.1 A few months later, in June, Tellabs filed a patent infringement suit in the Northern District of Illinois against Fujitsu, alleging that it infringed Tellabs’ Patent No. 7,369,772. Fujitsu filed a counterclaim in that case, claiming that Tellabs had infringed yet another of Fujitsu’s patents, No.…