No. 19-511October Term 2019Decided Apr 1, 2021Updated May 24, 2026
Facebook v. Duguid
Facebook, Inc. v. Duguid
The case asked whether Facebook’s login-alert text messaging system counts as an automatic telephone dialing system under the Telephone Consumer Protection Act, after Facebook sent unwanted security texts to Noah Duguid.
Case status
Decided 9-0 · April 1, 2021 · Opinion by Justice Sotomayor
Read the opinion (PDF)- Current stage
- Decided
- Latest event
- Decision released Apr 1, 2021
- What it's about
The case asked whether Facebook’s login-alert text messaging system counts as an automatic telephone dialing system under the Telephone Consumer Protection Act, after Facebook sent unwanted security texts to Noah Duguid. The Supreme Court ultimately held that a device is an autodialer only if it uses a random or sequential number generator to store or produce phone numbers.
Question presented
Whether the definition of ATDS in the TCPA encompasses any device that can "store" and "automatically dial" telephone numbers, even if the device does not "us[e] a random or sequential number generator."?
- Case path
United States Court of Appeals for the Ninth Circuit / Decision released Apr 1, 2021
- Area
Decided Supreme Court case
Timing
Decided April 1, 2021
The Court released its decision on April 1, 2021 without hearing oral argument.
Documents
Activity
Docket activity3
Brief added: Questions Presented
May 24, 2026 | Court records
Opinion added: opinion
Apr 1, 2021 | Court records
Brief added: Petition
Oct 17, 2019 | Court records
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Grounding
- Grounding
- Primary-source trail available.
- Note
- Plain-English explainer. Official filings and opinions remain authoritative.
- Checked
- Jul 25, 2026
- Method
- Methodology