District Court, D. Delaware April 21, 2011, Civ. 06-091-SLR (Callaway Golf Company v. Acushnet Company)

MEMORANDUM OPINION

SUE L. ROBINSON, District Judge.

I. INTRODUCTION

Plaintiff Callaway Golf Company (“plaintiff’) brought suit against defendant Acushnet Company (“defendant”), alleging that Acushnet has infringed various claims of four golf ball patents owned by plaintiff (known as the “Sullivan patents”): U.S. Patent Nos.