Oklahoma Medical Marijuana Laws: Patient Rights, Possession Limits, and Criminal Charges

What an Oklahoma Medical Marijuana Patient License Protects

A person who holds a valid OMMA patient license is legally authorized to possess and use medical marijuana within Oklahoma's limits. Oklahoma law also protects compliant medical marijuana use from arrest, prosecution, and state or local penalties when the patient or caregiver possesses the required license and stays within the protections of the medical marijuana laws. Oklahoma has several kinds of patient and caregiver licenses:

• Adult patient license: Available to qualifying Oklahoma residents age 18 or older and ordinarily valid for two years.
• Short-term patient license: Available to qualifying Oklahoma residents whose medical need is expected to be shorter and valid for 60 days.
• Out-of-state patient license: Available to qualifying nonresidents who possess a medical-marijuana license issued by another state government and valid for up to 30 days.
• Minor patient license: Available to Oklahoma residents under 18 under additional physician and parent or guardian requirements. A minor is not authorized to smoke or vaporize medical marijuana unless both recommending physicians agree that doing so is medically necessary.
• Caregiver license: Allows an approved caregiver to assist designated patients with buying, transporting, possessing, applying, or administering medical marijuana. A caregiver may be designated for as many as five licensed patients, while an adult patient ordinarily has one designated licensed caregiver.

The printed expiration date is not the only question when licensed status becomes important in a criminal case. A patient license also ends if it is revoked, surrendered, or validly terminated through the procedures governing the license, and OMMA maintains a system for verifying whether a patient or caregiver license is active.

Oklahoma Medical Marijuana Possession Limits

Oklahoma gives licensed patients separate possession limits for different forms of medical marijuana. Those limits are cumulative, meaning a patient does not have to choose only one of the authorized categories. A licensed patient is authorized to possess at one time:

• Up to 3 ounces of marijuana on the patient's person
• Up to 8 ounces of marijuana in the patient's residence
• Up to 1 ounce of concentrated marijuana
• Up to 72 ounces of edible marijuana
• Up to 72 ounces of topical marijuana
• 6 mature marijuana plants and the marijuana harvested from those plants
• 6 seedling plants

Location is part of the rule. The eight ounce residential allowance does not give a patient authority to carry eight ounces in a vehicle, backpack, or other location away from the residence, and the different limits for flower, concentrates, edibles, and topical products are not interchangeable.

The product category matters as well. A criminal investigation can therefore involve both the weight of the product and the question of what kind of product police actually seized, particularly when the evidence includes flower, concentrated marijuana, edibles, and other products at the same time.

Growing Medical Marijuana at Home

A licensed patient may grow six mature marijuana plants and six seedlings. The grow must be on real property the patient owns or on property where the owner has given the patient written permission to cultivate marijuana.

Patient grown marijuana also cannot be accessible to the general public or visible from an adjacent street to a person with normal 20/20 vision without using a device to improve the viewing distance or vantage point. Oklahoma does not impose a generic requirement in this rule that every patient grow be described as an “enclosed, locked space,” so the actual public-access and visibility requirements should control the analysis.

A patient also cannot use butane, propane, carbon dioxide, or another potentially hazardous material in an extraction process on residential property. The right to possess concentrated marijuana does not create authority to conduct a hazardous extraction operation at a house, apartment, garage, or other residential property.

Sharing or Giving Medical Marijuana to Someone Else

A patient license is permission for the patient's own authorized medical-marijuana activity, not a license to sell or distribute marijuana to other people. Oklahoma's patient rules prohibit a licensed patient from selling or otherwise transferring medical marijuana or medical-marijuana products to another person or entity.

There is one narrow criminal prosecution exception that is important to state accurately. A licensed patient who shares less than three grams of medical marijuana with an unauthorized person, without receiving money, property, services, or other value in return, is not subject to criminal prosecution for that transfer, although the patient is still subject to a $400 administrative fine.

That exception does not make the transfer lawful under OMMA rules, and it does not authorize a private marijuana business between patients. Once the facts fall outside that narrow exception, the transfer has to be evaluated under the criminal laws governing distribution, possession with intent to distribute, and any other offense actually alleged rather than assuming that possession of an OMMA card resolves the accusation.

Carrying Medical Marijuana in a Vehicle

A licensed patient may transport medical marijuana within Oklahoma while staying within the patient's lawful possession limits. Oklahoma does not allow a patient to take medical marijuana or medical-marijuana products across state lines merely because the marijuana was legally purchased or possessed here.

Oklahoma also has a separate marijuana open-container rule for vehicles. A person operating a motor vehicle on a public highway, street, or alley cannot possess an open container containing marijuana in the passenger area, and the operator cannot consume marijuana or inhale secondhand marijuana smoke caused by another person's consumption while driving on those roads.

A violation of that vehicle law is a misdemeanor and carries an additional $250 trauma-care assessment. The existence of a valid OMMA license does not create an exception from these vehicle restrictions.

Medical Marijuana DUI

An OMMA license does not authorize driving under the influence of marijuana. Oklahoma's DUI law expressly states that lawful entitlement to use a controlled dangerous substance or another intoxicating substance is not a defense to a DUI charge.

That does not mean the medical-marijuana license is irrelevant to every fact in the investigation. Lawful possession and DUI are separate questions, so a marijuana DUI case requires its own review of the particular DUI theory being alleged, the officer's observations, the circumstances of the stop, chemical testing, and the statements attributed to the driver.

Public Smoking and Vaping

Smoking and vaping medical marijuana are subject to the same Oklahoma restrictions that apply to tobacco smoking. A medical marijuana card therefore does not give a patient unrestricted authority to smoke or vape marijuana in public places or indoor workplaces.

Oklahoma law also allows residential and commercial property owners to prohibit smoking or vaporizing medical marijuana on the premises and within the area around an entrance specified by law. Workplace rules create additional restrictions that are separate from the general question of whether the patient's possession itself is lawful.

Medical Marijuana and Employment

Except where federal law or federal funding requirements control, an employer cannot refuse to hire, discipline, fire, or otherwise penalize someone solely because that person is an Oklahoma medical-marijuana licensee. Holding a valid card, however, does not guarantee protection from employment action following a positive marijuana test.

An employer may act under a written drug and alcohol testing policy adopted and enforced under Oklahoma's workplace drug testing law. Employees and applicants in statutorily defined safety-sensitive positions are subject to a zero tolerance drug and alcohol standard, regardless of an employer's use of an impairment based standard for other positions.

The safety sensitive definition reaches a wide range of work, including jobs involving motor vehicles or machinery, hazardous materials, firefighting, critical infrastructure, volatile or flammable materials, dispensing pharmaceuticals, carrying firearms, and direct patient or child care. Employers also do not have to permit possession, use, sale, transfer, or being under the influence of medical marijuana in the workplace or while an employee is performing job duties.

An Oklahoma Medical Marijuana License Is a State License

An OMMA license is an Oklahoma state license, and it does not settle every jurisdictional question. OMMA's current rules state that the rights granted by Oklahoma's medical marijuana licensing system do not extend to tribal trust land, tribal restricted land, or federal land within the state.

A marijuana investigation involving one of those locations therefore requires a separate jurisdictional analysis. Whether a case belongs in Oklahoma state court, a tribal court, or another jurisdiction cannot be decided merely from the existence of an OMMA card or a person's tribal membership.

How Lawful Patient Conduct Becomes Part of a Criminal Investigation

Medical-marijuana investigations frequently begin with something other than a planned marijuana investigation. A traffic stop, domestic disturbance call, search warrant, landlord complaint, probation contact, or investigation of another alleged offense can place marijuana, plants, money, communications, or other evidence in front of police.

The questions that follow are usually much more specific than “Did this person have a marijuana card?” Police and prosecutors may focus on issues such as:

• whether the OMMA license was active on the date involved;
• the amount and type of marijuana found;
• whether marijuana was on the patient or inside the residence;
• how many plants were mature and how many were seedlings;
• whether the patient owned the grow property or had written permission from its owner;
• whether the plants were accessible to the public or visible from an adjacent street;
• whether marijuana was transferred to another person;
• whether money or some other consideration was exchanged;
• whether messages, payments, packaging, or other evidence is being used to allege distribution;
• whether marijuana in a vehicle was in an open container in the passenger area;
• whether police are alleging DUI rather than unlawful possession; and
• whether the search, detention, or seizure complied with the Constitution.

The existence of marijuana, cash, a scale, packaging material, or text messages does not decide those questions by itself. The significance of each item depends on the actual charge, what the State has to prove, and the complete circumstances in which the evidence was found.

Defending a Criminal Charge Involving Medical Marijuana

The starting point in a medical-marijuana case is identifying exactly what the State claims was illegal. A valid patient license may establish that possession, use, or cultivation was authorized, while a prosecution involving an alleged transfer, excess amount, unlawful grow, DUI, or vehicle violation presents a different legal question.

Useful evidence may include OMMA licensing records, the license's status on the date of the incident, dispensary records, property records, written cultivation permission, photographs of the grow, plant counts, product weights, text messages, payment records, body camera video, search warrant materials, and video from a traffic stop or other police encounter. Rob examines that evidence against the specific allegation instead of assuming that lawful medical marijuana activity should automatically be treated as evidence of an illegal drug business.

Search and seizure issues also remain important in marijuana cases. A medical marijuana card does not waive constitutional protections, and police still need lawful grounds for a detention, search, warrant, or seizure when the Constitution requires them.

If police are questioning you about suspected unlawful possession, a grow, a marijuana transfer, distribution, or another criminal offense, you should decline to answer questions and ask to speak with a lawyer. Explanations about ownership, quantities, who had access to marijuana, when it was used, or why money changed hands can become evidence in a case even when the person speaking believes the explanation will clear everything up.