Lex MentisAttorney Check

New York attorney · Reg. #5532551

William Mattessich

Registered (registry: Currently registered)

Current employer

US Attorney'S Office - District of Minnesota · Minneapolis, MN · since at least September 2026

Admission

Admitted 2017, Second Department · Columbia Law School

Employment history

Compiled from NYS Office of Court Administration registration records and published NY Appellate Division decisions; current as of October 2026. Not an official record; verify with the NY Courts Attorney Search.