Coney Island Legal Battle Over Recipes | Sioux City News

Sioux City News Today | 2 Min News | The Daily News Now! · Aug 6, 2026 · 1m

A legal showdown erupts in Sioux City as Matthew Greer sues Coney Island for allegedly stealing his trade secrets and recipes — claiming they’re using his name and “secret sauce” without permission. The restaurant counters by saying the recipes came from George Margeas, not stolen, and that “Coney Island” is too generic to be trademarked. They’ve even called the lawsuit defamatory, saying it’s hurting their business and driving customers away. They’re asking the court to toss out four key counts — and are confident they’ve done nothing wrong. This spicy case could reshape how we think about…