Misappropriation claims levied by a Columbia Law School graduate-turned-website creator who said his design concepts were wrongfully shared with the creators of Pinterest.com must be dismissed because the alleged ideas weren’t described specifically enough, weren’t sufficiently novel, and weren’t confidential, an appeals court has ruled.

In a forceful and succinct decision, an Appellate Division, First Department panel provided a long list of reasons for tossing out claims of misappropriation of trade secrets and ideas brought by Theodore Schroeder, a lawyer who began developing a concept for a socially networked bulletin board site while at Columbia Law in 2005.