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Serving leading biopharmaceutical companies globally:

Express Scripts
UBS
Cerilliant
Daiichi Sankyo
Deloitte
Argus Health
Merck
Chubb
Dow
QuintilesIMS

Which pharmaceutical drugs have the most patents?

This chart shows the pharmaceutical drugs with the greatest number of patents still in force.

The number of patents covering a drug can be indicative of the value of a drug — more valuable drugs justify the substantial expense of building and maintaining large patent portfolios — but they can also be indicative of a company's legal or R&D acumen.

One clear way to keep competitors at bay is to surround key drugs with a web of strong patents, making it unlikely there will be any way to work around patents or invalidate a sufficient number of them. A large patent portfolio can also indicate strong, innovation-oriented R&D, with a focus on securing IP.

The drugs with the most unexpired patents are:

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