Legal Question in Criminal Law in California

Forgery is signing someone's name without their permission.

If you have written authorization from the owner for the specific actions you took in signing for them, then the owner could not claim forgery.

No. Forgery is the unauthorized signing of someone else's name with fraudulent intent. If you had permission, it's not forgery.

I agree with Mr. Dane. There is no forgery if the writing of a signature is authorized. The prosecutor must prove that the defendant acted without authority to convict for forgery.