Manual of Patent Practice

Section 29: Surrender of patents

Sections (29.01 - 29.07) last updated: January 2018.


s.77(1) is also relevant.

This section provides for the surrender of patents, including European patents (UK), and for opposition by a third party to an offer to surrender. Procedures are prescribed by r.42 and Part 7 – Proceedings before the Comptroller.

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


r42, r.75 is also relevant.

Notice of an offer by a proprietor to surrender his patent should be given in writing. The offer must then be advertised by the comptroller in the Journal.


The offer to surrender should be accompanied by either (a) a declaration that no infringement or revocation action relating to the patent is pending before the court; or (b) if such action is pending, full particulars of the action in writing. Where a revocation action is pending before the court, the comptroller may stay any consideration of the offer to surrender and order the proprietor to inform the court that an offer to surrender has been made (Dyson Ltd’s Patent [2003] RPC 24 and [2003] RPC 48). Genentech Inc’s patent (BL O/360/14) related to an offer to the comptroller to surrender a patent, where a revocation action was pending before the court. The patentee had already informed the claimant in the revocation action, as well as the court itself, of the offer to surrender. In addition, the court had issued a judgment stating the patentee had “applied to the UK IPO and surrendered the … patent. Therefore there is no patent and no reason to continue the [revocation] action in relation to that patent”. It was therefore clear that all parties had proceeded on the basis that the patent had been surrendered. In addition, no one opposed the offer to surrender. The hearing officer therefore determined that the offer to surrender could be accepted prior to the resolution of the revocation proceedings. More generally, the hearing officer found that if it is clear that the court, the claimant and patent holder in a revocation action are all aware that an offer of surrender has been made to the comptroller, and have proceeded on the basis that it has taken effect, then that offer to surrender should be accepted without the need to wait for the resolution of the revocation proceedings (subject to advertisement of the offer, and subject to any opposition being satisfactorily dealt with). For procedure where a revocation action is pending before the comptroller when the offer to surrender is made, see 72.36-72.39.

Section 29(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.


r.76(3), r.108(1) is also relevant.

Any person who wishes to oppose the surrender must do so on Form 15 within four weeks from the date of the advertisement. This period may not be extended. There is no need for an opponent to have a locus standi.


PR part 7 is also relevant.

The Form should be accompanied by a copy and a statement of grounds (in duplicate) This starts proceedings before the comptroller, the procedure for which is discussed at 123.05 – 123.05.13.


If proceedings to revoke the patent are pending before the comptroller the opposition to surrender will normally be stayed pending the outcome of the revocation action (see 72.36-72.39).

Section 29(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.


s.73(4) is also relevant.

If the comptroller accepts the offer to surrender this takes effect ex nunc. Consequently although no action can be taken in respect of an infringement which has taken place before the date on which the acceptance is advertised in the Journal, any royalties or other monies already paid to the proprietor cannot be recovered. Moreover since a prima facie valid patent will have been in existence for a period of time, however short, up to the surrender, an offer to surrender will not automatically terminate revocation proceedings (see 72.36). In addition, surrender of a European patent (UK) will only obviate revocation of a national patent with which it is in conflict if the offer to surrender is made before the date on which the notice of grant of the national patent appears in the Journal; see 73.11-12.

[ If no revocation proceedings are pending and the offer to surrender is not opposed, an acceptance of the offer to surrender should be prepared by Restoration and Post Grant Section (RAPS) and sent for signature to the Deputy Director of the group to which the subject-matter of the patent belongs. If he decides that the patent may properly be surrendered, then after signing the acceptance he should return the case to RAPS for the acceptance of the offer to be advertised. ]