The current Patent Examination Guide (implemented on February 20 1, 20 10) and the revised version of Patent Examination Guide implemented on April 20 1, 20 17 give specific instructions on how to modify patent documents:
A, the invention or utility model patent file modification is limited to the claims, the principle is:
(1) The title of the original claim shall not be changed.
(2) Compared with the authorized claim, the protection scope of the original claim shall not be expanded.
(3) It shall not exceed the scope recorded in the original specification and claims.
(4) In general, technical features not included in the authorization claim shall not be added.
Two, under the premise of meeting the above principles of modification, the specific way to modify the claim is generally limited to:
(1) claim deletion,
(2) the deletion of technical scheme,
(3) The further definition of the claim refers to adding one or more technical features recorded in other claims to the claim to narrow the scope of protection.
(4) correction of obvious errors.