Technically, an uninstaller for a license patcher would need to be careful and thorough. Good practice demands backing up altered files before removal, recording what changes were made, and restoring original versions where available. It should stop any services the patcher started, remove scheduled tasks, and clean registry keys or preference files touched by the patch. Error handling matters: if a file can’t be restored because it’s missing or has been overwritten, the uninstaller should log the issue and, where possible, provide safe fallbacks. A clean exit path is vital — the last thing needed is an uninstaller that leaves the system in a worse state than the patched setup.