Information on drawing requirements is based substantially on 37 CFR § 1.84.

Black and white drawings are normally required. India ink, or its equivalent that secures black solid lines, must be used for drawings. For nonprovisional utility applications, the “sheets” of drawings should be contained in an electronic document in PDF format filed via EFS-Web together with the other application documents in PDF format. Drawings made by hand should be scanned into PDF format for filing via EFS-Web. The following margins are required:

• On 21.6 cm by 27.9 cm (8 1/2 by 11 inches) drawing sheets, each sheet must include a top margin of at least 2.5 cm (1 inch), a left-side margin of at least 2.5 cm (1 inch), a right-side margin of at least 1.5 cm (5/8 inch), and a bottom margin of at least 1 cm (3/8 inch) from the edges, thereby leaving a sight (the usable surface) no greater than 17.6 cm by 24.4 cm (6 15/16 by 9 5/8 inches).

On 21 cm by 29.7 cm (DIN size A4) drawing sheets, each sheet must include a top margin of at least 2.5 cm (1 inch), a left-side margin of at least 2.5 cm (1 inch), a right-side margin of at least 1.5 cm (5/8 inch), and a bottom margin of at least 1 cm (3/8 inch) from the edges, thereby leaving a sight no greater than 17 cm by 26.2 cm.