---
kind: "unit"
title: "35"
title_heading: "Patents"
key: "ptI"
level: "part"
label: "Part I"
heading: "United States Patent and Trademark Office"
release: "119-102"
date: "2026-07-12"
url: "https://uscodex.org/usc/35/ptI"
sections_count: 27
---

# Part I — United States Patent and Trademark Office

Title 35 — Patents

## Contents

- [Chapter 1 — Establishment, Officers and Employees, Functions](/usc/35/ptI-ch1.md)
- [Chapter 2 — Proceedings in the Patent and Trademark Office](/usc/35/ptI-ch2.md)
- [Chapter 3 — Practice Before Patent and Trademark Office](/usc/35/ptI-ch3.md)
- [Chapter 4 — Patent Fees; Funding; Search Systems](/usc/35/ptI-ch4.md)