Illinois Winery Advances Suit Against California's Wine Sales Laws

3 min readSources: Courthouse News

Blue Sky Vineyards moves forward in lawsuit against California's differential wine sales regulations.

Why it matters: This case tests whether California's local-friendly rules for wine sales violate the Commerce Clause. Its outcome could reshape how states regulate alcohol sales across borders.

  • On Sept. 16, 2026, Judge John Mendez partially denied California's motion to dismiss the lawsuit.
  • Blue Sky Vineyards claims California favors in-state wineries by allowing them direct retailer sales, while out-of-state wineries must use a three-tier system.
  • The court allowed the Commerce Clause claim to proceed, doubting California's 21st Amendment defense at this stage.
  • The Privileges and Immunities Clause claim was dismissed since it protects citizens, not corporations.

Blue Sky Vineyards, an Illinois-based winery, has successfully moved past a preliminary dismissal in its lawsuit against California’s alcohol distribution laws. On September 16, 2026, U.S. Senior District Judge John Mendez ruled that the winery’s Commerce Clause claim can proceed in the U.S. District Court for the Eastern District of California.

The lawsuit argues that California treats in-state wineries more favorably by allowing them to sell directly to retailers. Out-of-state wineries like Blue Sky must instead navigate a three-tier distribution system involving importers and wholesalers. This, the plaintiff claims, creates an unfair burden and violates the Commerce Clause, which prohibits states from discriminating against interstate commerce.

Judge Mendez noted that California’s defense under the 21st Amendment — which gives states broad authority over alcohol regulation — has not yet shown it outweighs the Commerce Clause at this preliminary stage. He highlighted the legal test requiring states to prove their laws are non-discriminatory and have legitimate non-protectionist justifications.

The court dismissed Blue Sky’s claim under the Privileges and Immunities Clause because that legal protection applies to citizens rather than corporations.

This litigation follows a 2005 U.S. Supreme Court ruling that struck down state laws barring out-of-state wineries from shipping directly to consumers while letting local wineries do so. The case continues a legal challenge with potential to reshape state alcohol distribution laws nationwide.

By the numbers:

  • September 16, 2026 — Date Judge Mendez ruled on motion to dismiss
  • Three-tier system — Required distribution process for out-of-state wineries in California
  • 2005 — Year U.S. Supreme Court ruled against discriminatory direct shipping laws

Yes, but: California argues its regulation falls under the 21st Amendment’s authority over alcohol control, a defense the court has yet to fully accept.

What's next: The case will progress through litigation as the court considers whether California’s laws unlawfully discriminate against out-of-state wineries under the Commerce Clause.