A dual citizen of China and Canada has been arrested and charged with trying to steal trade secrets from a Massachusetts-based manufacturer of robotic surgical products by trespassing at its headquarters.

Dong Liu, who authorities say claimed to be a patent lawyer with a Beijing-based law firm when he was questioned about what he was doing at Medrobotics Corp., was charged in a criminal complaint filed in Boston federal court on Thursday.

The 44-year-old was charged with one count of attempting to steal trade secrets and one count of attempting to intentionally access a computer without authorization.