CHEN, Circuit Judge.
Gilead Sciences, Inc. ("Gilead") owns United States Patent Nos. 5,763,483 and 5,952,375, which are directed to antiviral compounds and methods for their use. While the patents list the same inventors and the written descriptions disclose similar content, they do not claim priority to a common patent application and have different expiration dates. Gilead sued Natco Pharma Limited ("Natco") for infringement of the '483 patent after Natco filed...
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