Game concept
Implicit Claim
The game also links it as Implicit Claims.
From the game's encyclopedia
Implicit Claims are Claims that are given to Eligible Children on all Titles held by their parents. If a parent loses a Title, the child's Implicit Claim will be removed too.
The game's text for patch 1.20.1.2. Words in blue are entries of the encyclopedia: hover one to read it, as in the game.
Implicit Claim is an entry of Crusader Kings III's in-game encyclopedia. The game explains it: "Implicit Claims are Claims that are given to Eligible Children on all Titles held by their parents." It is part of claim. The game also links it as Implicit Claims. Patch 1.20.1.2, from game/common/game_concepts/00_game_concepts.txt and game/localization/english/game_concepts_l_english.yml.
Source: game/common/game_concepts/00_game_concepts.txt, game/localization/english/game_concepts_l_english.yml and the English localisation, Crusader Kings III 1.20.1.2.