Honeywell Sues Former Suitor For Patent Infringement

In a verified complaint, Honeywell Int’l, Inc. (Morristown, NJ) sued Memsic, Inc. (Andover, MA) for infringement of Patent No. 5,247,278 directed to a magnetic field sensing device.  The story apparently goes like this: 

 

First Mesmic offered to purchase Honeywell’s magnetic sensor business but Honeywell declined.  Then Mesmic offered to license Honeywell’s magnetic sensor technology but Honeywell declined.  Then Mesmic began offering its own line of magnetic sensors, so Honeywell sued.

 

Honeywell Int’l, Inc. v. Memsic, Inc., 10-10528-NG (D. Mass. Mar. 30, 2010)