California Health and Safety Code 11350 HS makes it unlawful to possess a controlled substance unless you have a valid prescription. CALJIC 12.06 Possession-Not Unlawful-Burden of Proof.Health and Safety Code 11351 HS makes it a felony crime to have possession of specific controlled substances with intent to sell them. An experienced criminal defense attorney can help clarify these definitions and defend against misconceptions or wrongful charges. To be convicted of this crime, the prosecution must prove that you unlawfully possessed a controlled substance and knew of its presence. To find someone guilty of a drug case, the government must prove that the supposed unlawful substance found is in reality the drug that they think it to be. If you are facing a possession of a controlled substance with intent to sell charge under HS 11351, our team of drug defense attorneys are ready to help. Unlawful search and seizure is a common defense in drug crime cases. They include the use, possession, manufacturing, and distribution of unlawful controlled substances, unauthorized prescriptions, and drug paraphernalia. Let's dissect each of these elements so that we can better understand California codeine laws.