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Bass and Spangenberg file sixth IPR petition, targeting Pharmacyclics

Michael Loney, New York

The Coalition for Affordable Drugs has filed another inter partes review petition at the Patent Trial and Appeal Board, in the latest move by Kyle Bass and Erich Spangenberg to target pharmaceutical companies’ patents

The IPR petition challenges claims of US patent 8754090, which is owned by Pharmacyclics. AbbVie announced a deal to buy Pharmacyclics in a $21 billion deal in  March. The patent is for the cancer drug Imbruvica and covers methods for...

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