According to Cointelegraph, Matter Labs has filed trademark applications in nine countries, claiming that the term "zero knowledge" is the company's exclusive intellectual property. This move has aroused dissatisfaction in the cryptocurrency industry.

A group of industry leaders, including Polygon co-founders Sandeep Nailwal and Brendan Farmer, StarkWare CEO Eli Ben-Sasson, Polyhedra Network co-founder and zkBridge inventor Tiancheng Xie, and Turing Award winner and ZK-proofs co-inventor Shafi Goldwasser, signed an open letter calling on Matter Labs to withdraw its trademark application, calling it an "oppressive act." StarkWare CEO Eli Ben-Sasson directly stated that Matter Labs' attempt to register ZK technology as a trademark was an "absurd intellectual property squatting."

It is reported that Matter Labs has not yet responded to this matter.