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patent cliff

American  

noun

  1. a potential sharp drop in sales and revenue for a company when one of its patents expires.

    the looming patent cliffs faced by pharmaceutical firms.


Etymology

Origin of patent cliff

First recorded in 2005–10

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The pharmaceutical giant faces a major patent cliff starting this year as key protections for blockbuster drugs like Eliquis begin to expire.

From Barron's • May 5, 2026

As Citi’s Davis puts it, “This will be the biggest patent cliff of all time.”

From The Wall Street Journal • Nov. 18, 2025

But no company has a patent cliff quite like Merck’s.

From Barron's • Nov. 14, 2025

It also has promising drugs like newly launched flu-drug Xofluza but the patent cliff for its HIV treatments will create an earnings gap that will be hard to completely offset.

From Reuters • Jul. 16, 2019

Forester: That’s making the franchise of Amgen worth more because they’re not having as large of an impact at the patent cliff.

From Forbes • Sep. 4, 2014

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