Replace core DLL files (like AdskLicensingAgent.exe ) with altered versions that do not check for valid credentials.
To understand a patcher, you must first understand the licensing system it targets. AutoCAD 2022 uses a modified version of (by Revenera) combined with Autodesk’s own License Service (AdskLicensingService).
If you are searching for an "AutoCAD 2022 license patcher" because you cannot afford the subscription, you have excellent legal options that are safer and often more powerful.