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AMPHASTAR PHARMACEUTICALS v. AVENTIS PHARMA SA

Nos. 14-56382, 15-56209, 15-56122.

856 F.3d 696 (2017)

AMPHASTAR PHARMACEUTICALS INC., Relator, Plaintiff-Appellee, v. AVENTIS PHARMA SA; Aventis Pharmaceuticals Inc.; Sanofi-Aventis SA, Defendants-Appellants. Amphastar Pharmaceuticals Inc., Relator, Plaintiff-Appellant, v. Aventis Pharma SA; Aventis Pharmaceuticals Inc.; Sanofi-Aventis SA, Defendants-Appellees.

United States Court of Appeals, Ninth Circuit.

Filed May 11, 2017.

Attorney(s) appearing for the Case

Wayne R. Gross (argued), Evan C. Borges , Michael E. Lopez , and Bret D. Hembd , Greenberg Gross LLP, Costa Mesa, California, for Relator-Appellant/Appellee.

Mark A. Perry (argued) and Stephen C. Payne , Gibson Dunn & Crutcher LLP, Washington, D.C.; M. Sean Royall , Tracey B. Davies , and Olivia A. Adendoroff , Gibson Dunn & Crutcher LLP, Dallas, Texas; for Defendants-Appellants/Appellees.

Before: Diarmuid F. O'Scannlain and Johnnie B. Rawlinson, Circuit Judges, and Rosemary Marquez, District Judge.

OPINION

We must decide whether we have subject matter jurisdiction over a corporate qui tam action1 under the False Claims Act that accuses a competing company of committing fraud against the United States.

I

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