608.02(v) Drawing Changes Which Require Annotated Sheets [R-08.2012]
When changes are to be made in the drawing itself, other than mere changes in reference characters, designations of figures, or inking over lines pale and rough, a marked-up copy of the drawing should be filed with a replacement drawing. The marked-up copy must be clearly labeled as "Annotated Sheet." See 37 CFR 1.84(c) and 1.121(d). Ordinarily, broken lines may be changed to full without a sketch.
Annotated sheets filed by an applicant and used for correction of the drawing will not be returned. All such annotated sheets must be in ink or permanent prints.