US Senators Urge PTO’s Vidal To Tackle Pharma Patent Thickets

Thickets Stifle Competition For Generic And Biosimilar Drugs

A bipartisan group of senators has written to the US Patent and Trademark Office, urging it to tackle the impact of patent thickets on the generic and biosimilar drug industries.

Thicket
Patent thickets are known to delay entry of generic competitors to the market. • Source: Shutterstock

A group of six senators has written to recently-appointed US Patent and Trademark Office director Kathi Vidal, imploring her office to address the impact of so-called patent thickets on generic and biosimilar drug competition.

Developers of originator drugs are known to take out large numbers of patents to cover a single product or minor variations upon it, such as tweaks to delivery mechanisms, dosages or formulations. This practice,

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