---
kind: "unit"
title: "35"
title_heading: "Patents"
key: "ptI/ch3"
level: "chapter"
label: "Chapter 3"
heading: "Practice Before Patent and Trademark Office"
release: "119-102"
date: "2026-07-12"
url: "https://uscodex.org/usc/35/ptI-ch3"
sections_count: 3
---

# Chapter 3 — Practice Before Patent and Trademark Office

Title 35 — Patents › Part I — United States Patent and Trademark Office

## Sections

- [§31. Repealed.](/usc/35/31.md)
- [§32. Suspension or exclusion from practice](/usc/35/32.md)
- [§33. Unauthorized representation as practitioner](/usc/35/33.md)