---
kind: "unit"
title: "35"
title_heading: "Patents"
key: "ptI/ch4"
level: "chapter"
label: "Chapter 4"
heading: "Patent Fees; Funding; Search Systems"
release: "119-102"
date: "2026-07-12"
url: "https://uscodex.org/usc/35/ptI-ch4"
sections_count: 2
---

# Chapter 4 — Patent Fees; Funding; Search Systems

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

## Sections

- [§41. Patent fees; patent and trademark search systems](/usc/35/41.md)
- [§42. Patent and Trademark Office funding](/usc/35/42.md)