The term "Keygen" refers to a key generator, a type of software that generates a product key for a software application, bypassing the official purchase and registration process. When software is "patched," it means that modifications have been made to the original code, often to fix bugs, add features, or, in some cases, circumvent protection mechanisms like activation keys. The inclusion of a 2021 keygen and the term "patched" in the context of TuneUp Utilities 2014 suggests an attempt to extend the software's usability beyond its official support period or to bypass activation requirements.