Watson Pharmaceuticals, Inc subsidiary, Watson Laboratories, Inc has reached a settlement with Teva Women's Health, Inc on outstanding patent litigation related to Teva's Seasonale (levonorgestrel and ethinyl estradiol tablets USP, 0.15 mg/0.03 mg) product.

On December 13, 2007, Teva filed a patent infringement lawsuit against Watson in the United States District Court for the District of New Jersey involving Watson's Quasense product, which is a generic equivalent of Teva's Seasonale). Under terms of the settlement agreement, Teva has granted Watson a fully paid-up license to the US patents covering Seasonale and Watson will continue marketing its generic equivalent product Quasense (levonorgestrel and ethinyl estradiol tablets USP, 0.15 mg/0.03 mg). Watson further admits that the licensed patents are valid and enforceable.