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Terminal Disclaimer

Smith Hopen Intellectual Property Term Glossary Definition for Terminal Disclaimer
A statement that causes a second patent to expire on the same date as a first patent. Where two patent applications by the same inventor or joint inventors have been found to include substantially the same invention, and a finding of double patenting has been made, the filing of a terminal disclaimer allows the second patent to issue with an expiration date that coincides with the expiration date of the first patent.

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