Amicus Brief Outlines Dangers of California’s Internet Age-Estimation Requirement

Following our amicus brief critiquing the California Age-Appropriate Design Code Act (CAADCA) at the trial level, an appellate team continues its fight against the law at the Ninth Circuit.

Among other measures, CAADCA requires businesses to estimate the ages of online child users and configure privacy settings for them. NetChoice, a trade group whose members include Amazon, Google, Meta, and TikTok, sued to stop the law. Last September, a federal judge repeatedly cited our amicus brief when she blocked California from enforcing CAADCA, which is set to go into effect this July. California appealed.

Read More

In NetChoice v. Bonta, we have once again written an amicus brief on behalf of esteemed internet law scholar Eric Goldman, professor at Santa Clara University School of Law. The brief urges the Ninth Circuit to affirm the district court’s findings that the age-estimation requirement “erects onerous barriers that would endanger rather than protect children’s privacy, discourage Internet usage, and chill protected speech.”

Our brief explains and reinforces the lower court’s conclusion that CAADCA creates barriers for both minors and adults seeking access to the internet “and how those barriers impermissibly block users from engaging in activities that are protected by the First Amendment.”

Partners Jessie Ring Amunson and Lindsay Harrison and Associate Andy DeGuglielmo wrote the brief.

Related Locations

© 2026 Jenner & Block LLP. Attorney Advertising. Jenner & Block LLP is an Illinois Limited Liability Partnership including professional corporations. This publication, presentation, or event is not intended to provide legal advice but to provide information on legal matters and/or firm news of interest to our clients and colleagues. Readers or attendees should seek specific legal advice before taking any action with respect to matters mentioned in this publication or at this event. The attorney responsible for this communication is Brent E. Kidwell, Jenner & Block LLP, 353 N. Clark Street, Chicago, IL 60654-3456. Prior results do not guarantee a similar outcome. Jenner & Block London LLP, an affiliate of Jenner & Block LLP, is a limited liability partnership established under the laws of the State of Delaware, USA and is authorised and regulated by the Solicitors Regulation Authority with SRA number 615729. Information regarding the data we collect and the rights you have over your data can be found in our Privacy Notice. For further inquiries, please contact dataprotection@jenner.com.

Amicus Brief Outlines Dangers of California’s Internet Age-Estimation Requirement

Following our amicus brief critiquing the California Age-Appropriate Design Code Act (CAADCA) at the trial level, an appellate team continues its fight against the law at the Ninth Circuit.

Among other measures, CAADCA requires businesses to estimate the ages of online child users and configure privacy settings for them. NetChoice, a trade group whose members include Amazon, Google, Meta, and TikTok, sued to stop the law. Last September, a federal judge repeatedly cited our amicus brief when she blocked California from enforcing CAADCA, which is set to go into effect this July. California appealed.

Read More

In NetChoice v. Bonta, we have once again written an amicus brief on behalf of esteemed internet law scholar Eric Goldman, professor at Santa Clara University School of Law. The brief urges the Ninth Circuit to affirm the district court’s findings that the age-estimation requirement “erects onerous barriers that would endanger rather than protect children’s privacy, discourage Internet usage, and chill protected speech.”

Our brief explains and reinforces the lower court’s conclusion that CAADCA creates barriers for both minors and adults seeking access to the internet “and how those barriers impermissibly block users from engaging in activities that are protected by the First Amendment.”

Partners Jessie Ring Amunson and Lindsay Harrison and Associate Andy DeGuglielmo wrote the brief.

Related Locations

© 2026 Jenner & Block LLP. Attorney Advertising. Jenner & Block LLP is an Illinois Limited Liability Partnership including professional corporations. This publication, presentation, or event is not intended to provide legal advice but to provide information on legal matters and/or firm news of interest to our clients and colleagues. Readers or attendees should seek specific legal advice before taking any action with respect to matters mentioned in this publication or at this event. The attorney responsible for this communication is Brent E. Kidwell, Jenner & Block LLP, 353 N. Clark Street, Chicago, IL 60654-3456. Prior results do not guarantee a similar outcome. Jenner & Block London LLP, an affiliate of Jenner & Block LLP, is a limited liability partnership established under the laws of the State of Delaware, USA and is authorised and regulated by the Solicitors Regulation Authority with SRA number 615729. Information regarding the data we collect and the rights you have over your data can be found in our Privacy Notice. For further inquiries, please contact dataprotection@jenner.com.

News and Insights

Event

Associate Steven Arango to Speak at the Veterans' Legal Career Fair

On September 18, Associate Steven Arango will speak on a panel at the Veterans' Legal Career Fair (VLCF), the only legal career fair in the United States dedicated to veterans, active-duty service members, and military spouses.

September 18, 2026

Publications

In American Banker, Partner Laurel Loomis Rimon Weighs in on OCC's Handling of Fintech Bank Charter Applications

Partner Laurel Loomis Rimon spoke with American Banker about how the Office of the Comptroller of the Currency is approaching bank charter applications from fintechs, amid a growing wave of companies seeking charters from federal regulators.

August 18, 2026

Event

Partner David Greenwald to Speak at PLI Program on Privilege and AI

On August 17, David Greenwald will speak at "Fitting New “Tech” Into the Attorney-Client Privilege and Work Product Protection," a virtual program hosted by the Practising Law Institute (PLI).

August 17, 2026