Form

Request to extend a prescribed time limit

Use this form to request to extend a prescribed time limit.

Documents

Form 52

Form 52 (locked)

This file may not be suitable for users of assistive technology. Request an accessible format.

If you use assistive technology (such as a screen reader) and need a version of this document in a more accessible format, please email information@ipo.gov.uk. Please tell us what format you need. It will help us if you say what assistive technology you use.

Form 52 (unlocked)

This file may not be suitable for users of assistive technology. Request an accessible format.

If you use assistive technology (such as a screen reader) and need a version of this document in a more accessible format, please email information@ipo.gov.uk. Please tell us what format you need. It will help us if you say what assistive technology you use.

Details

This form is used to either:

  • to request a two month extension (where no such request has been made previously) to a time period prescribed by the rules listed in part 2 of Schedule 4 of the Patents Rules, or
  • to request the comptroller to otherwise extend (or further extend) a time period prescribed by the rules listed in part 2 of Schedule 4 of the Patents Rules

Where the request is made under the second bullet point above you must send evidence supporting the grounds for the request either with this form or as soon as possible afterwards (unless the office otherwise directs).

If the time period you wish to extend appears in part 3 of Schedule 4 of the Patents Rules you may request an extension of two months to these periods under the provisions of (i) above (rule 108(2)). Further extensions for these time periods are available under rule 108(3) however you should contact the office for advice on when these extensions are available.

Fee sheet

Fee payable forms must be accompanied with a completed fee sheet.

Cost

£135

Available online

Published 29 April 2014
Last updated 30 May 2018 + show all updates
  1. Patent Form 52: Data Privacy added.
  2. First published.