37 CFR § 1.2 Rules of Practice in Patent Cases

§ 1.2 Business to be transacted in writing.

Current through Aug 26, 2026 · Read all of Part 1

⚠ 1 pending change to Part 1

All business with the Patent and Trademark Office should be transacted in writing. The personal attendance of applicants or their attorneys or agents at the Patent and Trademark Office is unnecessary. The action of the Patent and Trademark Office will be based exclusively on the written record in the Office. No attention will be paid to any alleged oral promise, stipulation, or understanding in relation to which there is disagreement or doubt.

← § 1.1 Addresses for non-trademark correspondence with the United States Patent and Trademark Office.§ 1.3 Business to be conducted with decorum and courtesy. →