Inter Partes Reviews (IPRs) are a method to challenge the validity of patents at the US Patent and Trademark Office. IPRs can be instituted by anyone. As a public service we are making draft IPRs available for certain drugs where we have found the manufacturer to be engaging in “evergreening,” the practice of artificially extending the patent protection for a drug (and protection for the legal monopoly prices that go with it) by using patents of dubious innovative value.

See our blog post Evergreening, Altruism and Crowd Sourcing: Slashing Drug Prices by Having the US Patent Office Do Its Job for more information.

Depomed Nucynta, blog
Depomed Nucynta, Patent 7994364 Draft IPR (Word Document)
Depomed Nucynta, Patent 7994364 Draft IPT (PDF)