在醫藥專利侵權訴訟中,禁反言的主張尤其重要,因為,某些成分曾經被修正或刪除,往後,其他競爭者很可能就會使用同樣的成分。因此,本文藉由Ranbaxy Pharmaceuticals Inc. v. Apotex, Inc. (Fed. Cir. 2003).案件[1]來探討頭孢菌素類抗生素藥物的禁反言。
圖片來源 : shutterstock、達志影像
案件背景
本案被告為奧貝泰克 (Apotex Inc. ) 學名藥廠,原告則為蘭伯西 (Ranbaxy Pharmaceuticals Inc.) 學名藥廠,兩家藥廠皆希望成為非結晶型頭孢呋辛阿克替爾 (amorphous cefuroxime axetil) 的主要上市者因而涉訟。原告蘭伯西學名藥廠向美國紐澤西州 (the District of New Jersey) 的地方法院提起未侵害系爭專利之確認判決 (declaratory judgment) ,被告奧貝泰克學名藥廠則反訴其侵權並向法院聲請發佈初步禁制令(preliminary injunction) 。地方法院確認原告蘭伯西學名藥廠未侵害系爭專利,並否准初步禁制令的發佈,被告奧貝泰克學名藥廠不服地方法院的判決,所以提出上訴。
1. A process of preparing an amorphous cefuroxime axetil which comprises the steps of :
(a) dissolving crystalline cefuroxime axetil in a volume of a highly polar organic solvent only sufficient to dissolve it, and adding the resulting solution to water; or
(b) dissolving crystalline cefuroxime axetil in a volume of a highly polar organic solvent only sufficient to dissolve it, adding water to the resulting solution and subsequently adding the resulting aqueous - organic solution to water;
wherein the highly polar organic solvent is selected from the group consisting of a sulfoxide, an amide and formic acid.