Private Practice

Partner, Goldman Ismail Tomaselli Brennan & Baum LLP

Associate, Goldman Ismail Tomaselli Brennan & Baum LLP

Associate, Bartlit Beck Herman Palenchar & Scott LLP

Judicial Clerkship

The Honorable John T. Noonan, Jr., U. S. Court of Appeals for the Ninth Circuit


Yale Law School

University of Notre Dame (B.A., summa cum laude)


Bar & Court Admissions

State of Illinois

U.S. Court of Appeals for the Ninth Circuit

U.S. District Court, Northern District of Illinois

U.S. Court of Appeals for the Federal Circuit

Photo of Brian P. O

Brian P. O'Donoghue

Partner / Chicago

Highlights of Brian’s litigation practice include high-profile cases in products liability, intellectual property, complex commercial litigation, and securities litigation. He has been involved in multi-state class actions, internal investigations, and litigation matters relating to individual corporate clients in a variety of industries, including pharmaceutical, energy, manufacturing, and electronics. Clients rely on Brian’s keen judgment as well as his ability to master both the key issues of the case and the often dense and difficult subject matter.

Of Note

Representative Litigation

Sample mass tort matters include:

In re Mirena IUD Products Liability Litigation

Served as coordination counsel and national counsel for Bayer Healthcare Pharmaceuticals in thousands of federal and state cases involving the Mirena intrauterine device.  Team excluded all plaintiff experts on Daubert and then won summary judgment in the first MDL dismissing all cases.  Litigation continues in a second MDL (alleging different injuries) and in New Jersey, St. Louis, and California coordinated proceedings.

In re Vioxx

Defended Merck & Co., Inc. against allegations that its anti-inflammatory medication Vioxx had cause heart attacks.  Specific matters include:

In re Magnevist Products Liability Litigation

National counsel for Bayer in individual state cases regarding Bayer’s Magnevist gadolinium based contrast agent used in MRI scans.

In re Hormone Therapy Litigation

Counsel for Wyeth in product liability litigation involving Premarin and Prempro hormone replacement therapy products alleged to cause breast cancer.

Tanner v. Bayer Corp.

Represented Bayer in multi-state class action product liability litigation involving isocyanates used in polyurethane applications for underground coal mining.  Negotiated settlement.

Sample intellectual property matters include:

Alltech Associates v. Teledyne Instruments, Inc.

Lead counsel for defendant Teledyne Instruments in multi-patent litigation brought by W.R. Grace in the District of Delaware.  After winning all disputed terms at Markman hearing, a settlement was reached.

Visual Intelligence LP v. Teledyne Optech, Inc.

Lead counsel for defendant Teledyne Optech in multi-patent litigation pending in the Southern District of Texas.  After Teledyne Optech’s summary judgment briefing was filed, a settlement was reached.

Avionica, Inc. v. Teledyne Controls, Inc.

Lead counsel for defendant Teledyne Controls in multi-patent declaratory judgment action pending in the Southern District of Florida.  After Teledyne Controls’ summary judgment briefs were filed, a settlement was reached.

CEATS, Inc. v. Continental Airlines, Inc. et al

Represented defendant in multi-patent infringement suit in the Eastern District of Texas.  Plaintiff sued over 30 defendants. was the only defendant to win summary judgment of non-infringement.

Convolve et al. v. Compaq and Seagate (In re Seagate)

Lead counsel for Compaq (now Hewlett-Packard) in patent and trade secret dispute with Convolve relating to disk drive technology in which Convolve sought hundreds of millions of dollars in damages.  Retained to handle expert discovery and trial after case had been pending for several years.  Won summary judgment on all patent and trade secret claims.

Sample commercial matters include:

Servcor v.  Bayer Material Science LLC

Counsel for Bayer in multi-party dispute in Florida state court.  Following dissolution of parties’ business relationship, Plaintiff sought damages over $100 million for breach of contract, breach of fiduciary duty, negligence, fraud, and other tort and contract claims.  Over three years of litigation, Bayer won three sequential motions to dismiss after which plaintiff voluntarily dismissed all claims with prejudice.

Sportvision, Inc. et al. v. MLB Advance Media L.P.

Currently representing defendant Major League Baseball Advanced Media in lawsuit alleging breach of contract, trade secret misappropriation, and patent infringement.

In re Tyco

Represented Tyco in shareholder, securities, and ERISA litigations related to former C.E.O. Dennis Kozlowski’s alleged embezzlement of company funds.

Nicor Gas Co. v. Pappas Construction Co.

After client lost in arbitration, represented plaintiff Nicor Gas in suit arising from defendant’s alleged repeated destruction of underground gas lines. First chaired jury trial recovering 75% of client’s damages demand.

In re Parmalot Securities Litigation

Represented Deloitte Touche in auditor liability litigation related to alleged financial fraud by an Italian multination dairy and food corporation.  Negotiated settlement.