Section 29

Surrender of patents

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29.-(1) The proprietor of a patent may at any time by notice given to the comptroller offer to surrender his patent.

(2) A person may give notice to the comptroller of his opposition to the surrender of a patent under this section, and if he does so the comptroller shall notify the proprietor of the patent and determine the question.

(3) If the comptroller is satisfied that the patent may properly be surrendered, he may accept the offer and, as from the date when notice of his acceptance is published in the journal, the patent shall cease to have effect, but no action for infringement shall lie in respect of any act done before that date and no right to compensation shall accrue for any use of the patented invention before that date for the services of the Crown.

* Notes:**
Manual of Patent Practice
Rule 42: procedure under s29
Surrender takes effect ex nunc; although no action can then be taken in respect of infringement before surrender, the patent is not revoked, so any payments already made cannot be reclaimed.
Offer to surrender will not automatically terminate revocation proceedings.

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