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Investopedia explains 'Patent Share'
For example, the United States had a worldwide patent share of 43% as of 2003. The United States Patent & Trademark Office (USPTO) keeps track of the percentage of new patent issues that belong to every country on the globe, as well as the ratio of company-owned patents to those held by individuals.
By examining industries that are growing their market shares in patent discoveries, investors can get a sense of the health and vibrancy of an industry. Industries such as technology, biotech and pharmaceuticals have seen the largest share gains in the past decade; they also show the highest annual growth rates.
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