15 USC § 15b - Limitation of actions

---
identifier: "/us/usc/t15/s15b"
source: "usc"
legal_status: "official_prima_facie"
title: "15 USC § 15b - Limitation of actions"
title_number: 15
title_name: "COMMERCE AND TRADE"
section_number: "15b"
section_name: "Limitation of actions"
chapter_number: 1
chapter_name: "MONOPOLIES AND COMBINATIONS IN RESTRAINT OF TRADE"
positive_law: false
currency: "119-84"
last_updated: "2026-04-17"
format_version: "1.1.0"
generator: "[email protected]"
source_credit: "(Oct. 15, 1914, ch. 323, § 4B, as added July 7, 1955, ch. 283, § 1, 69 Stat. 283; amended Pub. L. 94–435, title III, § 302(1), Sept. 30, 1976, 90 Stat. 1396.)"
---


# § 15b. Limitation of actions

Any action to enforce any cause of action under section 15, 15a, or 15c of this title shall be forever barred unless commenced within four years after the cause of action accrued. No cause of action barred under existing law on the effective date of this Act shall be revived by this Act.

---

**Source Credit**: (Oct. 15, 1914, ch. 323, § 4B, as added July 7, 1955, ch. 283, § 1, 69 Stat. 283; amended Pub. L. 94–435, title III, § 302(1), Sept. 30, 1976, 90 Stat. 1396.)

## Editorial Notes

### References in Text

The effective date of this Act, referred to in text, probably refers to the effective date of , , which was six months after .

This Act, referred to in text, probably refers to act .

### Amendments

1976— substituted “section 15, 15a, or 15c” for “sections 15 or 15a”.

## Statutory Notes and Related Subsidiaries

### Effective Date

> “This Act [enacting this section and
> 
> , amending
> 
> , and repealing provisions set out as a note under
> 
> ] shall take effect six months after its enactment [
> 
> ].”

, , provided: