The term patent cliff refers to the phenomenon of patent expiration dates and an abrupt drop in sales that follows for a group of products capturing a high percentage of a market. Usually, these phenomena are noticed when they affect blockbuster products—a blockbuster product in the pharmaceutical industry, for example, is defined as a product with sales exceeding US$1 billion per year.
The term patent cliff refers to the phenomenon of patent expiration dates and an abrupt drop in sales that follows for a group of products capturing a high percentage of a market. Usually, these phenomena are noticed when they affect blockbuster products—a blockbuster product in the pharmaceutical industry, for example, is defined as a product with sales exceeding US$1 billion per year.
Source: Wikipedia "Patent cliff" · CC BY-SA 4.0
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