Representative matters

Twilio v. TeleSign, Patent Trial and Appeal Board

U.S. Patent 7,945,034. Obviousness assertions against a fraud-detection process based on a user's telephone number, rejected by the Board.

TeleSign v. Twilio, Central District of California

U.S. Patents 7,945,034; 8,462,920; 8,687,038; 9,300,792. Also defended three inter partes reviews.

StrikeForce v. PhoneFactor; StrikeForce v. Microsoft, District of Delaware

U.S. Patents 7,870,599; 8,484,698; 8,713,701. Out-of-band authentication.

SimpleAir v. Microsoft, Eastern District of Texas

U.S. Patents 7,035,914; 6,021,433.

Princeton Digital v. Microsoft, District of Delaware

U.S. Patent 4,813,056.

Tallgrass v. Microsoft, Eastern District of Texas

Addison Fischer Patents 5,346,972; 6,141,423; 6,216,229.

Pantaurus v. Microsoft, Eastern District of Texas

U.S. Patent 6,272,533.

Comcast v. Sprint, Eastern District of Pennsylvania

U.S. Patent 5,991,271.

InNova v. Cinemark, Eastern District of Texas

U.S. Patent 6,018,761.

E-contact v. Microsoft, Eastern District of Texas

U.S. Patent 5,347,579.

Skyline v. Microsoft, Eastern District of Virginia

U.S. Patent 7,551,172.

Buckman v. Solenis, Western District of Tennessee

U.S. Patents 8,841,469; 8,962,059. Argued at the Federal Circuit; the oral argument is in the court's public recordings.

Buckman v. Nalco, Northern District of Illinois

U.S. Patents 7,949,432; 8,012,758; 7,981,679.

Trademark Trial and Appeal Board

Defended a fashion company against a cancellation proceeding; pursued an opposition on behalf of a non-profit.