PCT 第28条,
PCT 第41条,
MPA Sec. 43,
MPR Rules 54,
MPR Rules 55,
MPR Rules 56
The following modifications to the description, claims and drawings may be made by the applicant:
(i) at any time, correction of clerical errors, omissions or obvious mistakes; such corrections must be made on Patents Form No. 42 (refer to Annex MW.VI) together with the payment of the related fee (refer to Annex MW.I);
(ii) until the acceptance of the application, amendments, provided that the scope of the subject matter of the application is not broadened thereby; such amendments must be made on Patents Form No. 30 (refer to Annex MW.IV) together with the payment of the related fee (refer to Annex MW.I);
(iii) after the acceptance of the application, amendments, but only if they are by way of disclaimer, correction or explanation and provided that the scope of the subject matter of the application is not broadened thereby; such amendments must be made on Patents Form No. 31 (refer to Annex MW.V) together with the payment of the related fee (refer to Annex MW.I).
All modifications must be accompanied by a copy certified by the applicant or his agent of those sheets on which the proposed amendment appears, clearly showing in red ink the amendment sought.