(Photo: Matthew Inman/The Oatmeal)

Deja vu? Matthew Inman, creator of the popular comic series The Oatmeal, is being sued again, this time for trademark infringement.

A greeting card company called Oatmeal Studios didn't take kindly to Mr. Inman's decision to collaborate with Recycled Greetings to turn his web comics into greeting cards, available for purchase in his online store. Ars Technica reports that the Massachusetts-based company has sued Mr. Inman for trademark infringement, arguing that his crossover into the ever-competitive greeting card market will confuse potential customers, who might not know The Oatmeal and Oatmeal Studios are different properties.

Mr. Inman must be getting rather sick of legal recourse by now. It wasn't so long ago that FunnyJunk lawyer Charles Carreon mounted a rather frivolous lawsuit against the Oatmeal creator for allegedly making defamatory statements about both him and FunnyJunk. In typical Oatmeal fashion, Mr. Inman responded by raising over $220,000 for charity and drawing a photo of Mr. Carreon's mom humping a bear.

We look forward to any obscene drawings this new lawsuit might bring.