Who owns the HANDIMONIUM trademark?

The live marks are owned by MATTEL, INC..

What classes is HANDIMONIUM trademarked in?

The live marks are in classes 28 (Games / toys / sports), 41 (Education / entertainment).

What should I do if I want to use HANDIMONIUM?

Screen the name for your goods first — a live mark in your class is the blocking case — and get a trademark attorney's view before investing in branding. This page is a screen, not a clearance opinion.

Is it trademarked?

Is HANDIMONIUM trademarked?

Yes — HANDIMONIUM is a live registered trademark. 3 live marks with the exact name HANDIMONIUM, owned by MATTEL, INC., in classes 28, 41.

Live marks with the exact name

Exact wordmark matches in the USPTO federal register, newest filing first.

HANDIMONIUMLive

Serial 99270403 · FIRST EXTENSION - GRANTED · Classes 28 (Games / toys / sports) · Owner MATTEL, INC. · Filed 2025-07-07

HANDIMONIUMLive

Serial 97635146 · FIFTH EXTENSION - GRANTED · Classes 41 (Education / entertainment) · Owner MATTEL, INC. · Filed 2022-10-17

HANDIMONIUMLive · Registered

Serial 87720657 · REGISTERED · Classes 28 (Games / toys / sports) · Owner MATTEL, INC. · Filed 2017-12-14 · Registered 2019-01-15

Register data as of 2026-11-09. Records can trail live filings — check the official USPTO search for the latest status before filing.

What this means

The live marks span classes 28, 41. A live mark in class 28 is not the same problem as one in class 41 — the risk depends on which class you sell in. The same word can often coexist in an unrelated class, but not in the same or a coordinated one.

Classes with a live mark: Class 28 (Games / toys / sports) · Class 41 (Education / entertainment)

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.

This is a screen, not a clearance opinion — common-law, state, and very recent filings are not covered.

Frequently asked questions

Is HANDIMONIUM trademarked?: Yes — there are 3 live marks with the exact name HANDIMONIUM, and it is registered.
Who owns the HANDIMONIUM trademark?: The live marks are owned by MATTEL, INC..
What classes is HANDIMONIUM trademarked in?: The live marks are in classes 28 (Games / toys / sports), 41 (Education / entertainment).
What should I do if I want to use HANDIMONIUM?: Screen the name for your goods first — a live mark in your class is the blocking case — and get a trademark attorney's view before investing in branding. This page is a screen, not a clearance opinion.