What are the requirements for drawing corrections in a patent application?

Drawing corrections in a patent application must comply with 37 CFR 1.121(d). Key requirements include:

• Submitting replacement sheets that include all figures from the previous version, even if only one figure is amended
• Labeling new sheets as ‘New Sheet’ and replacement sheets as ‘Replacement Sheet’ in the top margin
• Explaining all changes in detail in the drawing amendment or remarks section
• Including a marked-up copy of any amended drawing figure, labeled as ‘Annotated Sheet’, when required by the examiner

Applicants should note that the USPTO does not make drawing changes. It is the applicant’s responsibility to ensure drawings are corrected according to the provided instructions.

To learn more:

• drawing corrections
• patent application
• replacement sheets