# incontestability

> English word · Noun

## Definitions
1. The state or quality of being incontestable.
2. The state of having been registered as a trademark for more than five consecutive years without a challenge, and therefore conclusively presumed not to cause confusion with any other trademark, and to have acquired distinctiveness.

## Etymology
From in- + contestability.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/incontestability