Sifuentes v. Dropbox, Inc., 4:20-cv-07908

Plaintiff (pro se) sued Dropbox alleging his 2012 Dropbox account was compromised in a data breach and that Dropbox failed to inform him, asserting privacy, negligence, emotional distress, conversion, and various statutory claims and seeking $550,000.
Plaintiff created his Dropbox account on December 15, 2011 by clicking an "I agree to Dropbox Terms of Service" checkbox; the July 6, 2011 TOS was hyperlinked; Plaintiff does not dispute assent to the 2011 TOS.
The 2011 TOS did not contain a mandatory arbitration clause; Dropbox added a mandatory arbitration provision in a March 24, 2014 TOS and maintained similar arbitration clauses thereafter.
Dropbox argues users were notified of the 2014 change by mass email (stating arbitration was added and outlining an opt-out), and that continued use bound users to later TOS; Dropbox contends Plaintiff remained an active user.
Plaintiff denies reading or accepting any updated TOS or emails and never opted in to arbitration; Dropbox produced no evidence that Plaintiff opened the notification email or otherwise had actual notice.
The Court held Dropbox failed to prove by a preponderance of the evidence that Plaintiff had actual or constructive (inquiry) notice of the post-2011 TOS or that he unambiguously manifested assent to arbitration, and therefore denied Dropbox’s motion to compel arbitration.

Issue	Plaintiff's Argument	Defendant's Argument	Held
Whether a valid arbitration agreement exists	Sifuentes: he only agreed to 2011 TOS which lacks arbitration	Dropbox: user agreed to later TOS (which added arbitration) by continued use and by email notice	Court: No valid arbitration agreement—Dropbox failed to prove assent to post-2011 TOS
Whether Plaintiff had actual notice of the 2014 arbitration clause	Sifuentes: he never opened or agreed to updated terms or emails	Dropbox: it sent email notice to users describing arbitration and provided opt-out link	Court: No evidence Plaintiff opened the email; Dropbox did not meet burden of proof for actual notice
Whether Plaintiff had constructive/inquiry notice via website or continued use	Sifuentes: continued use did not show assent without conspicuous notice or affirmative act	Dropbox: continued use manifests assent under browsewrap/terms-change language in 2011 TOS	Court: Inquiry notice lacking—Dropbox failed to show reasonably conspicuous notice on its site or an unambiguous manifestation (e.g., clicking) by Plaintiff
Burden and standard for compelling arbitration when formation disputed	Sifuentes: ambiguities and lack of proof favor denying arbitration	Dropbox: FAA favors arbitration; must enforce written arbitration agreements	Court: FAA applies, but party seeking to compel bears preponderance burden to show agreement; Dropbox did not meet it, so motion denied

Epic Sys. Corp. v. Lewis, 138 S. Ct. 1612 (2018) (federal policy favors enforcement of arbitration agreements)
Moses H. Cone Mem'l Hosp. v. Mercury Constr. Corp., 460 U.S. 1 (1983) (strong federal policy favoring arbitration)
Volt Info. Scis., Inc. v. Bd. of Trustees of Leland Stanford Jr. Univ., 489 U.S. 468 (1989) (courts enforce arbitration agreements according to their terms)
Lifescan, Inc. v. Premier Diabetic Servs., Inc., 363 F.3d 1010 (9th Cir. 2004) (two-step inquiry: existence of agreement and scope)
Henry Schein, Inc. v. Archer & White Sales, Inc., 139 S. Ct. 524 (2019) (arbitrability questions can be delegated to arbitrator if clearly agreed)
Norcia v. Samsung Telecomms. Am., LLC, 845 F.3d 1279 (9th Cir. 2017) (party seeking to compel arbitration must prove agreement by preponderance)
Nguyen v. Barnes & Noble, Inc., 763 F.3d 1171 (9th Cir. 2014) (distinguishes enforceable clickwraps from more problematic browsewraps)
Berman v. Freedom Financial Network, LLC, 30 F.4th 849 (9th Cir. 2022) (inquiry-notice standard: conspicuous notice plus unambiguous affirmative action required)
Brennan v. Opus Bank, 796 F.3d 1125 (9th Cir. 2015) (standard for delegating gateway issues to arbitrator)
Three Valleys Mun. Water Dist. v. E.F. Hutton & Co., 925 F.2d 1136 (9th Cir. 1991) (party opposing arbitration entitled to benefit of reasonable doubts)
Goldman, Sachs & Co. v. City of Reno, 747 F.3d 733 (9th Cir. 2014) (apply state-law contract principles when formation contested)