{"data":{"id":"us/37-cfr-1.437","jurisdiction":"us","citation":"37 CFR 1.437","heading":"The drawings.","body":"(a) Drawings are required when they are necessary for the understanding of the invention (PCT Art. 7).\n(b) The physical requirements for drawings are set forth in PCT Rule 11 and shall be adhered to.","path":["Title 37—Patents, Trademarks, and Copyrights","CHAPTER I—UNITED STATES PATENT AND TRADEMARK OFFICE, DEPARTMENT OF COMMERCE","SUBCHAPTER A—GENERAL","PART 1—RULES OF PRACTICE IN PATENT CASES","Subpart C—International Processing Provisions"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-37.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:25:45Z","sha256":"85a0b5690b8f9b2cea04c499b1dc5e6daff873cda3a3ef460d359b6cb44a2aba","source_id":"us-cfr","stale":true,"prev":"us/37-cfr-1.436","next":"us/37-cfr-1.438"},"notice":"GroundRules: Original legal text. Not legal advice."}