ImmunoGen, Inc.

3 registered patent practitioners: 3 patent attorneys and 0 patent agents, Waltham, MA.

• Thanh V. Erion — Patent attorney, Reg. No. 73493, ImmunoGen, Inc.
• Joseph J. Kenny — Patent attorney, Reg. No. 43710, ImmunoGen, Inc.
• David P. Pleynet — Patent attorney, Reg. No. 64229, ImmunoGen, Inc.