USPTO trademark record

PYRRHONIAN

Live mark · Owner Steven Wasielewski · Classes 42

Mark details

Owner: Steven Wasielewski
Serial number: 99730066
Registration number: Not registered
Status: PUBLISHED FOR OPPOSITION
Classes: 42 (Software / tech services (SaaS, design, hosting))
Filed: 2026-03-27
Registered: —
Goods / services: Scientific and technological services, namely, research and design in the field of artificial intelligence safety, epistemology, and mechanistic interpretability.

Register data as of 2026-11-08. Records can trail live filings — check the official USPTO search for the latest status before filing.

Similar marks

Nearest marks in the register to PYRRHONIAN.

PYRRHONIANLive

Classes 9 (Software / electronics / downloadable media), 16 (Paper / printed matter), 41 (Education / entertainment) · Steven Wasielewski

PYRRHONIANLive

Classes 17 (Rubber / plastics) · Mingye Chen

PYRRHIONIALive

Classes 9 (Software / electronics / downloadable media) · Shenzhen Manshanyao Technology Co., Ltd.

PYRRHALive

Classes 14 (Jewellery / watches), 35 (Advertising / retail / business services) · Pyrrha Design Inc.

PYRRHA'S PASSIONLive

Classes 33 (Alcoholic drinks) · SUNSET MEADOW FARM, LLC

Screen your own name

A fast first-pass screen against the USPTO federal register — sound-alikes, look-alikes, and same or related classes, in plain English. Free, no signup.

Screen a name — free · Start a free watch