Abstract
The global pharmaceutical industry consists of innovators and generics. Innovators focus on drug discovery, and bring new drugs into the marketplace after filing the new drug applications. In contrast, the generics enter the market by making a bioequivalent product by filing abbreviated new drug applications. In order to maximize their returns on R&D and maintain market share, the innovators introduce a wide range of drug products based on the same 'new molecular entity' and protect them against competition by filing what the industry term as secondary patents. The patents of four innovator viz., AstraZeneca, Takeda, Eisai and Wyeth related to the gastroesophageal reflux disease drugs and how their new molecular entity patents overcame the nonobviousness criteria is analyzed and studied in detail.
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