Are color drawings and photographs allowed in international patent applications?

No, color drawings and color photographs are not permitted in international applications. This is explicitly stated in MPEP 608.02(c):

Color drawings and color photographs are not permitted in international applications (see PCT Rule 11.13).

This restriction is based on the PCT Rule 11.13, which sets out the physical requirements for drawings in international applications. Applicants should be aware that only black and white line drawings are acceptable for international applications filed under the Patent Cooperation Treaty (PCT).

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Topics: Patent Law, Patent Procedure
Tags: color drawings, color photographs, international patent applications, Pct Rule 11 13, Pct Rule 1113