Patent number 372121 has been granted to MICROSOFT TECHNOLOGY LICENSING, LLC that is titled MAINTAINING UNDO AND REDO CAPABILITY ACROSS METADATA MERGES. The primary independent claim of this patent states a method for preservation of metadata during an undo operation at a client computer that includes modification of a first section and second section of a document on a word processing application on the client computer that includes performing user action in the first and second section of a document and receiving metadata. The patent applicant responded to this objection by stating that as per the CRI Guidelines of June 2017, to pass the test of patentability under section 3(k), an invention should be judged from the substance of the claim as a whole and the technical advancement or technical effect also needs to be assessed. This patent falls under the category of Computer Science. Overall, this patent covers a method for preservation of metadata during an undo operation at a client computer that includes modification of a first section and second section of a document on a word processing application on the client computer that includes performing user action in the first and second section of a document and receiving metadata.