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• An annual fee that must be paid to most patent offices to maintain a patent in force. In the U.S., the fee is called a maintenance fee.

  Robert M. Hunter, Ph.D. - Cite This Source - This Definition
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  Cite Definition for Annuity

  American Psychological Association (APA)

  Annuity. (n.d.). Glossary of Patent Terms. Retrieved April 1, 2023, from website: http://www.expertglossary.com/definition/annuity.

  Chicago Manual of Style (CMS)

  Annuity. www.webpatent.com. Glossary of Patent Terms. Robert M. Hunter, Ph.D.. http://www.expertglossary.com/definition/annuity (accessed: April 1, 2023).

  Modern Language Association (MLA)

  "Annuity." Glossary of Patent Terms. Robert M. Hunter, Ph.D.. 1 April. 2023 http://www.expertglossary.com/definition/annuity.

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