3M Combat Arms earplugs
Which product was at the center of the largest multidistrict litigation (MDL) docket in U.S. history?
The earplug MDL dominated federal civil filings from FY 2020, but just 15 new cases were filed in FY 2025, down from 23,624 the year before.
Source: Chief Justice's 2025 Year-End Report on the Federal Judiciary (2025) supremecourt.gov
