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Drug patent survives invalidity challenge based on lack of teaching or suggestion in the art, teaching away, unexpected results and long-felt need
| August 15, 2017
Millennium Pharmaceuticals Inc. v. Sandoz Inc., et al.
July 17, 2017
Before: Newman, Mayer and O’Malley. Opinion: Newman
Summary
The inventors discovered that freeze-drying mannitol with an existing, but unstable, drug resulted in an ester which solved stability and solubility problems of the drug alone. The patent survived an invalidity challenge since there was no teaching or suggestion of freeze-drying this drug in the presence of mannitol. Non-obviousness was further bolstered by a teaching away, unexpected results and evidence of a long-felt need.
Category: Case Summary
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