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Ipglossary.com is a practical glossary for managers, executives and technologists as well as lawyers working in IP in an international environment. The glossary provides practical explanations of key legal and business terms in a large number of technology related fields including intellectual property, licensing, venture capital, corporate and securities law, antitrust and competition law, and of course terms relevant to technology, in general. Read more

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That which would infringe if later in time, invalidates if earlier

An aphorism that illustrates the tension between prior art and infringement in patent law. If an item of technology falls within the properly construed claims of the patent, it is infringing, unless it existed before the priority date of the patent, in which case it serves to invalidate the patent on grounds of anticipation.

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