ATLANTA (July 26)—Bridgestone Sports Co. Ltd. has sued Callaway Golf Ball Co. for alleged patent infringement on one of the golf balls Callaway makes. The Callaway Golf Co. subsidiary denies the charges, calling the lawsuit a "pre-emptive marketing ploy against a successful new entrant into the ball market." The "Rule 35" golf ball was unveiled Feb. 4 after Callaway spent $170 million and three years of research on the project, the company said. Bridgestone Sports is a subsidiary of Japan´s Bridgestone Corp.
Bridgestone unit sues Callaway over golf ball
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