It's simply described as knowingly filing a forged or false document with a California government office. There are three crimes related to forgery.These are: credit card fraud – PC 484f,; check fraud – PC 476, and; making or selling counterfeit goods – PC 350. According to California Penal Code 115, it is illegal to file, register, or record a false or forged document with a California public office. A handwriting expert and an attorney can help prove your innocence.