Private Practice

Partner, Goldman Ismail Tomaselli Brennan & Baum LLP 

Associate, Goldman Ismail Tomaselli Brennan & Baum LLP 

Associate, Susman Godfrey LLP

Judicial Clerkship

The Honorable Richard Clifton, U.S. Court of Appeals for the Ninth Circuit


Stanford Law School (J.D., with distinction)

Cornell University College of Human Ecology (B.S., with distinction)  


Bar & Court Admissions

State of Illinois

State of Texas

U.S. Court of Appeals for the Fifth Circuit

U.S. Court of Appeals for the Ninth Circuit

U.S. District Court for the Northern District of Illinois

U.S. District Courts for the Eastern, Northern, Southern, and Western Districts of Texas

Photo of Jennifer L. Greenblatt

Jennifer L. Greenblatt

Partner / Chicago

“Jennifer Greenblatt is highly recommended.” – The Legal 500

An accomplished litigator and strategist, Jen Greenblatt develops and executes case themes, defends and deposes key fact and expert witnesses, briefs and argues dispositive motions, and examines trial witnesses in complex product liability, antitrust, and commercial cases nationwide. And she gets results: Jen’s work has led to favorable pre-trial dismissals, settlements, and jury verdicts for a diverse roster of clients, including pharmaceutical and medical device manufacturers, software companies, major retailers, and energy businesses. Jen’s attention to detail also makes her a natural in handling all aspects of case management in litigations with millions to billions of dollars at stake.

Jen’s successes have garnered well-deserved industry recognition. By way of example, The Legal 500 has repeatedly ranked Jen in Product Liability, Mass Tort and Class Action Defense and Law360 selected her as one of five product liability "Rising Stars." Her publications are widely cited from federal appellate and state supreme court opinions to Yale Law Journal, Harvard Law Review, and NYU Law Review articles. Jen also serves on advisory boards for Law360 and the Emory Law Institute for Complex Litigation and Mass Claims.

Of Note

Representative Litigation

Hurricane Katrina Litigation

Trial counsel for large cement company defending against claims by a governmental entity for over $400 million in alleged property damage. Plaintiff brought these claims under maritime law, alleging that a barge that broke free during Hurricane Katrina caused the failure of a floodwall alongside a New Orleans neighborhood. The case settled on terms favorable to our client days before trial.

In re K-Dur Antitrust Litigation

Second-chair trial counsel for Merck in the class action and consolidated opt-out antitrust lawsuits brought by wholesalers and major pharmacy retail chains that directly purchased K-Dur® 20, an extended-release potassium chloride supplement. Plaintiffs sought over $800 million alleging a June 1997 patent settlement with a generic maker of K-Dur® 20 was anticompetitive. The matter settled shortly before trial.

Gadolinium Retention Contrast Dye Litigation

Lead counsel for Bayer in nationwide litigation regarding Bayer’s Magnevist® contrast dye. Plaintiffs claim that they developed a variety of injuries as a result of retaining gadolinium in their body following use of Bayer’s gadolinium-based contrast agent Magnevist® and other contrast agents during MRI procedures.

Haley et al. v. Bayer HealthCare Pharmaceuticals Inc.

Lead counsel for Bayer in California federal court wrongful death action involving alleged birth defects from in utero exposure to prescription calcium channel blocker. The day Bayer’s motion to dismiss was due, plaintiffs voluntarily dismissed Bayer from the case without prejudice for 90 days and with prejudice thereafter.  

Pan v. Medtronic, Inc.

Won summary judgment on behalf of Medtronic in product liability and wrongful death case pending in California state court concerning Medtronic’s nerve-monitoring endotracheal tube after successfully moving to exclude plaintiff’s medical causation expert.

Plumbers and Pipefitters Local 572 Health and Welfare Fund et al. v. Merck & Co., Inc.

Obtained complete pre-discovery voluntary dismissal with prejudice for Merck in a putative class action brought by health benefit payors alleging Merck’s co-pay subsidy programs violated RICO and antitrust statutes and tortiously interfered with contracts. With only the tortious interference claim remaining, unearthed the key contracts at issue through online research and filed a dispositive motion that ended the case days before the first pretrial conference.

Federal Trade Commission v. Staples, Inc. and Office Depot, Inc.

Represented Staples, Inc. in its proposed $6.3 billion acquisition of Office Depot, Inc., which the Federal Trade Commission moved to enjoin in D.C. federal court.

Golden Archer Investments, LLC v. SkyNet Financial Systems, LLC

Achieved complete pre-trial victory for software development company SkyNet Financial in a commercial lawsuit filed by investment firm Golden Archer in Southern District of New York. Following oral argument, won summary judgment that dismissed Golden Archer’s multi-million dollar contract claim and awarded SkyNet Financial substantial damages on its counterclaim for overdue development fees and punitive damages on its counterclaim for violation of Illinois eavesdropping statute.

Fosamax Litigation

Represent Merck & Co., Inc. in litigation concerning Fosamax®, a prescription drug used for the treatment and prevention of osteoporosis and other bone disorders. 

Nephrogenic Systemic Fibrosis Contrast Dye Litigation

Represented Bayer in federal litigation regarding Bayer’s Magnevist® contrast dye. Plaintiffs claim that they developed a progressive, incurable disease known as nephrogenic systemic fibrosis (NSF) as a result of exposure to Bayer’s gadolinium-based contrast agent Magnevist® and other contrast agents during MRI procedures.

In re Ethicon, Inc., Pelvic Repair System Products Liability Litigation

Represent Johnson & Johnson and Ethicon in federal MDL concerning prescription pelvic mesh products used for the treatment of pelvic organ prolapse and stress incontinence. Deposed over a dozen plaintiffs.

Tula Foods v. Kroger et al.

Trial counsel for plaintiff Tula Foods, the maker of Better Whey of Life® Greek yogurt, in a 6-week jury trial in Ohio state court. Tula Foods asserted claims of fraud, breach of contract, and misappropriation of trade secrets in suit against The Kroger Co. and Weber Flavors.

CEATS, Inc. v. Continental Airlines, Inc.

Won summary judgment of non-infringement on behalf of defendant in a patent infringement suit in the Eastern District of Texas. Plaintiff CEATS sued over 30 defendants relating to online ticketing patents. was the only defendant to win summary judgment of non-infringement.

Walker Digital, LLC v. Activision Blizzard, Inc.

Obtained pre-discovery dismissal for defendant MLB Advanced Media in a patent infringement suit brought in the District of Delaware.

Discovery Clothing Co. v. Priceless Clothing Co.

Represented plaintiff Discovery Clothing, the largest independently owned chain of women's clothing stores in Chicago, in a trade dress infringement and unfair competition suit filed in federal court in the Northern District of Illinois. Shortly after our client moved for a preliminary injunction, Defendant agreed to settle the case on favorable terms for Discovery. In the stipulation dismissing the case, Defendant conceded that Discovery is the prevailing party, acknowledged the validity of Discovery's trade dress, agreed to dramatically change the appearance of its retail stores, agreed to pay our client's lost profits and attorneys' fees, and dismissed all counterclaims with prejudice.


Jennifer Greenblatt and Edward Dumoulin, Personal Jurisdiction: Clinical Trial Contacts after BMS, ABA Section of Litigation

Ken Baum, Jennifer Greenblatt & Julie Cantor, Assessing the Post-Riegel Landscape: The Effect of Sales Representatives’ Actions on Preemption Analyses, Drug, Device and Biotechnology IADC Committee Newsletter

Jennifer Greenblatt, Using the Equal Protection Clause Post-VMI to Keep Gender Stereotypes Out of the Public School Dress Code Equation, 13 U.C. Davis J. Juv. L. & Pol’y 281 

Jennifer Greenblatt, Putting the Government to the (Heightened, Intermediate, or Strict) Scrutiny Test: Disparate Application Shows Not All Rights and Powers Are Created Equal, 10 Fla. Coastal L. Rev. 421 

Jennifer Greenblatt, What’s Dignity Got to Do with It?: Using Anti-Commandeering Principles to Preserve State Sovereign Immunity, 45 Cal. W. L. Rev. 1