This educational guide is based on the linked primary sources. It is not a Court publication, is not affiliated with the Court, and is not legal advice.
In brief
Overview
The Supreme Court held that the Telephone Consumer Protection Act’s definition of an automatic telephone dialing system requires the use of a random or sequential number generator, and rejected the broader interpretation advanced by Duguid.
Background and question before the Court
The case concerned whether equipment that does not use a random or sequential number generator falls within the definition of an automatic telephone dialing system under 47 U.S.C. § 227(a)(1)(A).
What each side argues
Facebook, Inc.
According to Facebook, Inc., according to Facebook, Inc., according to Facebook, Inc., facebook argues that the TCPA defines an Automatic Telephone Dialing System as equipment that can store or produce telephone numbers to be called, using a random or sequential number generator, and that can dial those numbers.
United States
The United States contends that if the ATDS provisions were meant to cover equipment broader than random or sequential dialing, Congress would not have left residential landlines unprotected.
Duguid
Source-limited. The record does not yet support a complete account.
What happened at oral argument
What the Court decided
The Court held that Duguid’s counterarguments cannot overcome the clear commands of § 227(a)(1)(A) and that the narrow statutory design does not support his broad interpretation.
Why it matters
Terms to know
- Automatic Telephone Dialing System (ATDS)
- Equipment with the capacity to store or produce telephone numbers to be called, using a random or sequential number generator, and to dial such numbers.
Primary sources
Read the source materials on the official site or open the immutable repository copy used for this guide.
- ce77e843169e293bd645-r1-13fce8305df8d3b3.pdforal argument transcript
- e11fa7170ab1697f58d9-r1-28e6840e19a47d85.pdfopinion
Guide generated September 28, 2026. Automated validation accepted this version.