---
kind: "unit"
title: "37"
title_heading: "Patents, Trademarks, and Copyrights"
key: "chI/subchC"
level: "subchap"
label: "Subchapter C"
heading: "Protection of Foreign Mask Works"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/37/chI-subchC"
sections_count: 6
---

# Subchapter C — Protection of Foreign Mask Works

Title 37 C.F.R. — Patents, Trademarks, and Copyrights › Chapter I — United States Patent and Trademark Office, Department of Commerce

## Contents

- [Part 150 — REQUESTS FOR PRESIDENTIAL PROCLAMATIONS PURSUANT TO 17 U.S.C. 902(a)(2)](/cfr/37/chI-subchC-part150.md)
- [Part 151-199 — Parts 151-199 [reserved]](/cfr/37/chI-subchC-part151-199.md)