Watson Infringes Bayer’s Natazia Patent; Bayer Pharma v. Watson Laboratories

On December 28, 2016, Leonard P. Stark Judge of United states district court For the district of Delaware has ordered in favor of Bayer Pharma AG, Bayer Intellectual Property GmbH, and Bayer HealthCare Pharmaceuticals Inc. (collectively “Plaintiffs”) and against Defendant Watson Laboratories, Inc. (“Watson”) on the claim in Plaintiffs’ Complaint dated December 18, 2012, that the commercial manufacture, use, offer for sale, sale, and/or importation into the United States of the proposed generic version of Bayer HealthCare’s Natazia® combined oral contraceptive that is the subject of Watson’s Abbreviated New Drug Application (“ANDA”) No. 202349 would infringe Claims 1-3 of U.S. Patent No. 8,071,577 (“the ‘5 77 patent”).

Further, the judge also ordered in favor of Plaintiffs and against Watson on the counterclaim of invalidity in Watson’s Answer and Counterclaim dated January 9, 2013. Specifically, that Claims 1-3 of the ‘577 patent are not invalid under any provision of 35 U.S.C. §§ 101, 102, 103, or 112, or any other judicially-created bases for invalidation.

Background:

FDA approved Natazia which contains Dienogest; Estradiol Valerate as active ingredients to prevent pregnancy in women who elect to use an oral contraceptive, and to treat heavy menstrual bleeding in women without organic pathology who choose to use an oral contraceptive as their method of contraception.

The following patents were listed in OB for Natazia

U.S. Patent Number Expiration Date
6,133,251 (the ‘251 patent) Expired (October 25, 2016)
6,884,793 (the ‘793 patent) Expired (October 25, 2016)
8,071,577 (the ‘577 patent) May 13, 2026
8,153,616 (the ‘616 patent) January 30, 2028

Watson has filed an ANDA  contains paragraph IV certifications under section 505(j)(2)(A)(vii)(IV) with respect to US ‘251, ‘793, and ‘577 patents, stating that each patent is invalid, unenforceable, or will not be infringed by your manufacture, use, or sale of Estradiol Valerate Tablets, 1 mg and 3 mg, Estradiol Valerate and Dienogest Tablets, 2 mg/2 mg and 2 mg/3 mg, under this ANDA.

Bayer has not initiated any action for infringement of the US ‘251 and ‘793 against Watson within the statutory 45- day period. Bayer only brought the lawsuit under the infringment of US ‘577 patent.

Watson ANDA  contains a statement under section 505(j)(2)(A)(viii)  with respect to US ‘616 patent which claims MOT and it is irrelevant to Watson ANDA.

As per the final judgment given by judge P. Stark the Food and Drug Administration(“FDA”) shall reset the effective date of the approval of Watson’s ANDA No. 202349 to be a date that is not earlier than the date of expiration of the ‘577 patent inclusive of the patent term adjustment awarded to Plaintiffs under 35 U.S.C. § 154(b) (May 13, 2026).

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