Class Actions & Mass Actions

Recent Activity

Results are sorted by the date of most recent activity.

In re Marriott International Customer Data Security Breach Litigation

July 14, 2022

Fourth Circuit grants petition for review of decision certifying a class whose members cannot be readily identified and an “issues” class to pursue elements of negligence when the negligence claim...

Harris v. Medical Transportation Management, Inc.

July 1, 2022

U.S. Chamber files amicus brief urging D.C. Circuit to hold that a Rule 23(c)(4) issues class must still satisfy the requirements of Rule 23(b) as to the plaintiffs’ cause of action and that the “...

Prantil v. Arkema France S.A.

June 8, 2022

U.S. Chamber files coalition amicus brief urging the Fifth Circuit to review certification of damages class that includes many individuals with no Article III standing. Previously, the U.S....

Burnett v. National Association of Realtors

June 2, 2022

Eighth Circuit denies permission to appeal class certification where the district court failed to rigorously analyze predominance and to conduct a full Daubert inquiry for expert evidence. The U....

In re Marriott International Customer Data Security Breach Litigation

May 25, 2022

U.S. Chamber files coalition amicus brief urging Fourth Circuit to review decision certifying a class whose members cannot be readily identified and an “issues” class to pursue elements of...

Tershakovec v. Ford Motor Co.

May 18, 2022

U.S. Chamber files coalition amicus brief explaining that class treatment is inappropriate for fraud claims requiring individualized showings of reliance, causation, or materiality, as well as for...

Burnett v. National Association of Realtors

May 13, 2022

U.S. Chamber files amicus brief urging Eighth Circuit to review class certification where the district court failed to rigorously analyze predominance and to conduct a full Daubert inquiry for...

McKnight v. Uber Technologies, Inc.

April 29, 2022

U.S. Chamber files coalition amicus brief explaining that district court approval is required under Federal Rule of Civil Procedure 23(e)(5) for payments to objectors in exchange for forgoing...

Heredia v. Sunrise Senior Living, LLC

April 1, 2022

Ninth Circuit grants Rule 23(f) petition to consider class certification order that erred by including uninjured members alleging a risk-of-harm. The U.S. Chamber filed an amicus brief supporting...

Hardwick v. 3M Co.

March 28, 2022

U.S. Chamber files coalition amicus brief urging Sixth Circuit to review certification of 23(b)(2) injunctive class seeking an investigative study of health effects of PFAS chemicals and...