STIIIZY Lawsuit: Psychosis, Pesticides, and Patent Claims

The cannabis brand STIIIZY is the subject of a STIIIZY lawsuit list that has grown steadily since late 2022, with active cases covering teen psychosis claims tied to high-potency THC vapes, a federal class action over Delta-8 hemp products alleged to exceed legal THC limits, a California class action over pre-roll potency labeling, pesticide contamination findings that prompted a state recall, and a patent fight with Pax Labs that ended in a U.S. International Trade Commission import ban. Several matters are still moving; others have settled or been dismissed.

Teen Psychosis Lawsuits Over High-Potency Vapes

The largest single cluster of cases involves minors and former underage users who allege that STIIIZY’s high-potency THC vape products caused psychotic episodes. By February 2026, the law firm Rouda Feder Tietjen & McGuinn had filed nine such lawsuits.¹

The first was filed May 29, 2024, in California Superior Court in Marin County, on behalf of a minor identified as “John Doe.” The plaintiff, described as a 4.6-GPA student and athlete, alleged he began using STIIIZY vape products at 15 after seeing them promoted on Snapchat, and that his use escalated until a violent psychotic episode in August 2022 led to a 72-hour involuntary psychiatric hold at Marin General Hospital and a 10-day inpatient stay in Santa Rosa.² The complaint alleged the company used “deceptive marketing tactics” aimed at youth through product names like “Pineapple Express” and “Dreamsicle” and imagery of attractive models, while failing to warn of the risk of cannabis-induced psychosis.³

A second suit followed in late August 2024 in Los Angeles County Superior Court on behalf of a 16-year-old from Contra Costa County identified as “KG.” The complaint alleged the plaintiff used STIIIZY products “multiple times per day” and suffered a psychotic episode on April 20, 2022, during which he stole his father’s truck and attempted to board a plane at San Francisco International Airport while claiming to be a rapper. He was committed to a psychiatric ward, and a second psychotic break reportedly followed in December 2023. The claims included negligence, fraud, failure to warn, and design defects.⁴

A December 2024 complaint from another “John Doe” alleged he developed cannabis-induced psychosis after using the vape products to manage sports-related pain and anxiety. It brought negligence, fraud, strict products liability, and breach of implied warranty claims, and sought compensatory and punitive damages along with injunctive relief.⁵ A ninth complaint, filed in Los Angeles County Superior Court, was announced in February 2026 on behalf of a minor plaintiff. Attorney June Bashant said STIIIZY’s THC vape pods have potency levels of 60% to 90%, “far beyond what consumers historically encountered,” and pose “significant risks, especially to developing adolescent brains.”¹

STIIIZY has denied the allegations. A company representative called the Marin County complaint “false, inflammatory and defamatory,” and said STIIIZY does not market to minors, complies with California packaging requirements, and age-gates its dispensaries to customers 21 and older.² Commentators have noted these cases face a difficult legal road because proving direct causation between cannabis use and a specific psychiatric condition is more complex than in typical product liability litigation.⁵

Delta-8 Hemp Product Class Action

In April 2024, two consumers filed a putative class action in the U.S. District Court for the Southern District of Illinois alleging STIIIZY’s Delta-8 hemp-derived vape pens and edibles contained far more Delta-9 THC than federal law allows. The case, Taylor Byron et al. v. Stiiizy, Inc. (Case No. 3:24-cv-01082-NJR), was brought by Taylor Byron of Illinois and Taylor Berry of Missouri.⁶ The plaintiffs cited independent lab testing of a “Skywalker OG Pen D8” product that allegedly showed 3.57% Delta-9 THC, more than ten times the 0.3% dry-weight threshold set by the 2018 Farm Bill.⁷

STIIIZY moved to dismiss, arguing the plaintiffs could not show they were injured, had not tested the specific products they purchased, and that proper THC testing should be done on liquid content rather than on pre-harvest plant material as federal regulations require.⁸ On January 29, 2025, Chief Judge Nancy J. Rosenstengel granted the motion in part and denied it in part. The court dismissed all claims tied to the Missouri class for lack of personal jurisdiction and dismissed the negligent misrepresentation claim under the economic loss doctrine. Three claims survived: the Illinois consumer fraud claim, common law fraud, and unjust enrichment. The judge found STIIIZY had intentionally cultivated the Illinois market through promotional events, a Chicago flagship store, and product distribution to retailers across the state.⁷ The case was heading to discovery as of early 2025. STIIIZY reported in mid-2024 that it had ceased manufacturing and distributing hemp-derived vape products.⁹

A separate federal RICO case in Georgia, Ledbetter v. Cloud 9 Online Smoke & Vape, LLC, swept STIIIZY in with other vape manufacturers, retailers, and labs on allegations they conspired to sell federally illegal cannabis products mislabeled as legal hemp.⁶ On March 31, 2026, Judge Steven D. Grimberg dismissed the federal RICO claims, finding the plaintiff had not plausibly alleged a RICO enterprise and that the relationships described reflected “standard business operations.” The remaining state law claims were dismissed without prejudice.¹⁰

Pre-Roll THC Labeling Class Action

A separate class action filed in December 2022 in Los Angeles County Superior Court alleged STIIIZY systematically overstated the THC content on its pre-rolled joints. In Gallard v. Ironworks Collective Inc. et al. (Case No. 22STCV38021), plaintiff Shanti Gallard claimed independent lab tests showed a “40s Strawnana 2G Preroll” labeled at 50.57% THC actually tested at 33–34%, with a similar gap on a “40s Strawberry Cough 2G Preroll” labeled at 46.10% THC. The complaint alleged the discrepancies far exceeded the 10% margin of error the California Department of Cannabis Control allows.¹¹ The suit brought claims under California’s Unfair Competition Law, False Advertising Law, and Consumer Legal Remedies Act.¹²

Pesticide Findings and California Recall

A 2024 joint investigation by the Los Angeles Times and WeedWeek found the pesticide pymetrozine, classified as a carcinogen, in 13 of 14 STIIIZY vape products tested. STIIIZY’s products reportedly contained the greatest concentration of pymetrozine of any products examined. Because pymetrozine is not on California’s mandatory screening list and the state has set no residue limit for it, STIIIZY executives said the company was not in violation of state rules and had begun voluntarily testing for pesticides beyond the required panel.¹³

On December 6, 2024, the California Department of Cannabis Control issued a voluntary recall of four batches of STIIIZY Premium THC Pods for potential contamination with a “Category I pesticide,” the agency’s designation for chemicals with the most highly acute toxicity levels. The recalled Pink Acai and Purple Punch varieties, manufactured by Ironworks Collective, had been distributed to 48 retail locations across 16 California counties.¹⁴ The DCC did not publicly name the specific pesticide.¹⁵

Pax Labs Patent Case and ITC Import Ban

The case with the biggest operational bite is the patent fight with rival Pax Labs. Pax filed a complaint at the U.S. International Trade Commission in early 2024. The investigation (No. 337-TA-1392) named STIIIZY IP LLC, STIIIZY Inc., and manufacturer ALD Group, and alleged infringement of four patents covering “leak-resistant vaporizer device” technology (U.S. Patent Nos. 11,369,756; 11,369,757; 11,759,580; and 11,766,527).¹⁶

On January 20, 2026, the ITC issued its final determination that STIIIZY and ALD products infringed all four patents. The Commission entered a limited exclusion order barring the importation of infringing oil vaporizing devices, cease and desist orders against STIIIZY, and a bond of 100% of the value of infringing products imported during the presidential review period.¹⁶¹⁷ STIIIZY appealed. As of April 2026, the ITC refused to pause the import and sales bans during the appeal, and the exclusion and cease and desist orders remain in force.¹⁸

Illegal Dispensary Allegations

Former Shryne Group CEO Jon Avidor sued the company, alleging it “knowingly operated 18 illegal dispensaries statewide” through shell companies and strawmen, and that he was fired for raising concerns.¹⁹ Avidor voluntarily dismissed the suit following a confidential settlement, according to STIIIZY spokesperson Pristina Alford. Separately, the Los Angeles City Attorney’s Office accused co-founder Tony Huang and others of using a shell company to enable illegal cannabis sales at a South Los Angeles property. Huang and his co-defendants were ordered to pay $1 million in civil penalties, which the company has paid.⁹

STIIIZY has attributed its legal exposure in part to its size and market position, telling reporters that the scrutiny comes with being the industry’s leading brand.⁹

1
RFTM Law. Partner June Bashant Featured in Law360 for Lawsuits Against Stiiizy
2
KRON4. Potent Cannabis Product Induces Psychosis for Marin County Teen, Lawsuit Alleges
3
Bloomberg Law. Student Alleges Stiiizy Fails to Warn of Weed-Induced Psychosis
4
MJBizDaily. Cannabis Company Stiiizy Faces Second Lawsuit From Teen Alleging Psychosis
5
San Fernando Sun. Former User Sues Marijuana Brand Stiiizy Alleging Products Caused Psychosis
6
CRB Monitor. Stiiizy Hemp Products Draw Another Federal Lawsuit
7
Perkins Coie. Taylor Byron, et al. v. Stiiizy, Inc., Case No. 3-24-01082 – Opinion
8
MJBizDaily. Stiiizy Makes Bold Hemp Claim in Lawsuit Alleging Excessive THC
9
SFGate. Stiiizy, California Cannabis Vape Brand
10
Buchalter. Ledbetter v. Cloud 9 Online Smoke & Vape LLC – Court Rejects RICO Theory
11
ClassAction.org. Stiiizy Pre-Rolled Joints Contain Less THC Than Advertised, Class Action Alleges
12
Dovel Law. Gallard vs. Ironworks Collective Inc. and Stiiizy LLC, Class Action Complaint
13
Los Angeles Times. California Weed Cleanup
14
Cannabis Business Times. Stiiizy Premium THC Vape Pods Recalled in California
15
Newsweek. California Weed Recall Pesticide Contamination Warnings Vapes
16
Federal Register. ITC Investigation No. 337-TA-1392, Final Determination
17
Bloomberg Law. Pax Wins ITC Import Ban on Stiiizy, ALD Infringing Vape Products
18
Law360. ITC Keeps Stiiizy Vape Import Ban in Place Pending Appeal
19
SFist. California’s Largest Dispensary Chain Stiiizy Accused of Running Illegal Underground Pot Shops