What are the size and margin requirements for patent drawings?

The size and margin requirements for patent drawings are specified in 37 CFR 1.84(f) and (g). Key requirements include:

  • Sheet size: 21.0 cm x 29.7 cm (DIN size A4) or 21.6 cm x 27.9 cm (8 1/2 x 11 inches)
  • Top margin: at least 2.5 cm (1 inch)
  • Left side margin: at least 2.5 cm (1 inch)
  • Right side margin: at least 1.5 cm (5/8 inch)
  • Bottom margin: at least 1.0 cm (3/8 inch)

The usable surface (sight) should not exceed 17.0 cm x 26.2 cm on A4 size sheets or 17.6 cm x 24.4 cm on 8 1/2 x 11 inch sheets. Drawings must also include scan target points (cross-hairs) printed on two cater-corner margin corners.

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Topics: Patent Law, Patent Procedure
Tags: Drawing Margins, Drawing Size