If amendments are made to the claims, a complete set of new claims should be filed.
The applicant may submit his amendments by fax and there is no need for a confirmation letter, unless the faxed document is illegible. Printed or typed amendments are preferred; handwritten amendments are, in general, not acceptable. Nevertheless, if the handwritten amendments are legible they may – at the discretion of the EPO – be admitted.
If amendments are made to a sequence listing contained in an application filed in electronic form, a sequence listing in electronic form comprising the entire listing with the relevant amendment must be filed.
PCT AI Annex C, 3ter