The patent violation involves
$2 billion in sales
Mach 3 and Mach 3 Turbo razors had more than $2 billion in sales in 2002, according to Gillette. Quattro began shipping to retailers earlier this month.
This is the first lawsuit between Gillette and Energizer over razors since Energizer bought the Schick-Wilkinson Sword business from Pfizer earlier this year, though the two have been in court frequently over the years in litigation involving Gillette's Duracell and Energizer batteries.
A spokeswoman for Energizer declined to comment, saying the company had not seen Gillette's complaint.