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Glennon represents public and private clients in a variety of matters.

He regularly advises clients on company-critical litigation and provides strategic advice to in-house counsel and senior management in crisis management, commercial contracting, product safety and litigation avoidance. As a result, he has a breadth of knowledge and experience not often found with other attorneys.

Glennon’s two decades in the practice of law involves an ever-widening range of technologies, products and services, including consumer products, industrial equipment, marketing technology and telecommunications. He frequently works with manufacturing and technology companies, as well as financial institutions and other clients. A persuasive advocate, Glennon has delivered winning arguments in state and federal courts at the trial and appellate levels, as well as in arbitration and bankruptcy proceedings and before administrative agencies. He handles cases as lead counsel but also collaborates as part of national trial teams in conjunction with other top U.S. law firms.

Clients seek his advice in commercial disputes, class action lawsuits, product liability defense and contractual claims.

Glennon leads a client service team that handles commercial transactions for a global technology company and has negotiated a wide variety of agreements including technology development, supply, distribution, marketing, and quality assurance and nondisclosure agreements. He regularly assists clients with the drafting and negotiation of purchase and sales agreements, distributor agreements, sales representative agreements, license agreements, service agreements and other commercial agreements.

Glennon’s class action experience includes state and federal proceedings involving advertising, marketing and billing practices, as well as defending numerous lawsuits filed under the Telephone Consumer Protection Act (TCPA), Missouri Merchandising Practices Act (MMPA), the Fair and Accurate Credit Transactions Act (FACTA), and state deceptive trade practice statutes. He works with lawyers across the country in a variety of multiple-firm cooperative approaches on behalf of clients, including the consolidation of more than 30 cases challenging a client's advertising and billing practices and the use of an All Writs Act injunction enjoining competing state class actions. Glennon has defended more than 16 separate TCPA claims.

Glennon’s work often involves industry and consensus standards promulgated by the American National Standards Institute (ANSI), Underwriters Laboratories (UL), the National Fire Protection Association (NFPA) and many others. He has significant experience with investigations and lawsuits relating to fires, explosions and workplace fatalities. Glennon also assists clients with safety investigations, product recalls and other corrective actions. He advises clients regarding reporting requirements, submissions and complaint responses related to the Consumer Product Safety Commission (CPSC). He frequently works with product safety officers, engineers and outside consultants.

His experience includes advertising and marketing practices, patented biotechnology, counterfeit goods, process control systems, fiber optic cables, plastics  and injection molding equipment, remote control systems, steam conditioning valves, emission controls, signal integrity products, motors, pump systems, electrical switches, cryogenic products, control valves, ladders, manufactured housing, hot tubs, lighting fixtures, socket assemblies, heat tape, tires, tools, residential plumbing, and commercial and industrial piping systems.

In the construction field, Glennon has handled contract default, supply/procurement, defective workmanship, delay, engineering and design defect, and mechanics’ lien/bond claims. His experience involves a variety of commercial, industrial and municipal projects, including one of the nation’s largest cement plants, a cogeneration power plant, one of the country’s largest mass transit systems and fiber optic cable relocation.

Before returning to private practice, Glennon was unit chief of the Consumer Protection Division of the Missouri Attorney General’s St. Louis office, where he directed the investigation and prosecution of violations of Missouri's consumer protection statutes. He handled a broad array of issues, including electronic commerce, advertising, promotion and marketing, truth-in-lending (TILA), counterfeit goods and automobile leasing, as well as health and safety claims. He also represented Missouri in a variety of multistate investigations coordinated by the National Association of Attorneys General (NAAG) and in joint state/federal investigations with representatives of the Federal Trade Commission (FTC) and other state and federal agencies.




  • Martindale-Hubbell AV Preeminent
  • St. Louis Small Business Monthly, Best Attorneys, 2021


  • J.D., Saint Louis University School of Law
    • magna cum laude
    • Order of the Woolsack
    • American Jurisprudence Award, Torts
    • Dean Vincent C. Immel Scholarship
    • Judge V. James Ruddy Scholarship
    • Saint Louis University Law Journal, Managing Editor, Volume 36; Staff Editor, Volume 35
  • B.S.B.A., Saint Louis University
    • Economics
    • summa cum laude


  • Missouri
  • Illinois
  • U.S. Court of Appeals, Eighth Circuit
  • U.S. Court of Appeals, Eleventh Circuit
  • U.S. District Court, Central District of Illinois
  • U.S. District Court, Northern District of Illinois
  • U.S. District Court, Southern District of Illinois
  • U.S. District Court, Eastern District of Missouri
  • U.S. District Court, Western District of Missouri
  • U.S. District Court, Western District of Tennessee

Professional Memberships and Certifications

  • The Bar Association of Metropolitan St. Louis
  • Defense Research Institute
  • The Missouri Bar
  • National Association of Manufacturers
  • Obtained summary judgments and/or dismissals for a variety of clients, including manufacturing and technology companies and service providers, in more than two dozen cases with no settlement payment.
  • Secured the dismissal of eight class action cases without any settlement payment.
  • Recovered more than $3.1 million for creditor/client, notwithstanding the filing of three separate bankruptcies, two by judgment debtors and a third by a partner in one of the debtors.
  • Obtained an order compelling the imaging and inspection of a plaintiff’s computers and electronic storage devices, requiring plaintiff to answer expedited discovery and providing other relief, all before the Rule 16 Scheduling Conference or the issuance of a case management order. The order also dismissed 20 counts filed against the client and all claims against the client’s president.  Subsequently, all remaining claims were dismissed and the defendant/client was awarded over $350,000 in fees and costs.
  • Compelled arbitration and enforced plaintiffs' contractual class waivers for timeshare client when consumers sought class action alleging fraud and violation of Missouri Merchandising Practices Act (MMPA).
  • Successfully defended putative $11,000,000 class action against retail client under Missouri Merchandising Practices Act (MMPA) with removal to federal court and Class Action Fairness Act (CAFA). Case was voluntarily dismissed by plaintiff with no payment by our client.
  • Glennon has more than 35 reported decisions, including the following:

    • Thomas Klutho, et al. v. Jim Butler Imports, LLC, --- F.Supp.3d ----, 2021 WL 2222688 (E.D.Mo. June 02, 2021) (dismissing putative class action alleging violations of the Telephone Consumer Protection Act)
    • W. Silver Recycling v. Nidec Motor Corporation, 509 F. Supp.3d 1106 (E.D.Mo. 2020) (granting motion to dismiss breach of contract claims where manufacturer quit using recycler when contract did not contain exclusivity provision)
    • Parker-Hannifin Corp. v. Laird Technologies, Inc., 2020 WL 2405432 (May 12, 2020 (N.D. Ohio May 12, 2020) (rejecting challenges to clients' experts in patent infringement litigation)
    • Vinny Troia, et al v. Tinder, Inc., Match Group, 2020 WL 619855 (E.D. Mo. February 10, 2020) (dismissing putative class action alleging violations of the Missouri Merchandising Practices Act, unfair practices, and unconscionability)
    • Dale Craggs, et al. v. Fast Lane Car Wash & Lube, LLC, 402 F.Supp.3d 605 (W.D. Mo. 2019) (dismissing breach of contract claim and proposed impermissible fail safe putative class definition)
    • McLelland v. Ridge Tool Company and Emerson Electric Co., 350 F.Supp.3d 773 (W.D. Ark. 2018) (awarding costs to client after prevailing on the merits in tort action)
    • McLelland v. Ridge Tool Company and Emerson Electric Co., 342 F.Supp.3d 851 (W.D. Ark. 2018) (granting summary judgment on plaintiff's failure to warn, manufacturing defect, and design defect claims)
    • McLelland v. Ridge Tool Company and Emerson Electric Co., 340 F.Supp.3d 802 (W.D. Ark. 2018) (excluding plaintiff's mechanical engineering expert witness)
    • Marilyn Margulis, et al. v. Generation Life Ins. Co., 91 F.Supp.3d 1165 (E.D.Mo. 2015) (Plaintiff's vague allegations failed to state a claim under the Telephone Consumer Protection Act)
    • St. Louis Heart Center, Inc. v. Forest Pharmaceuticals, 2013 WL 3988671, 2013 U.S. Dist. 109807 (E.D.Mo.) (July 17, 2013)
    • Harvey v. General Electric Company, 2012 WL 3733582 (clarified in favor of defendants by Dkt. No. 92) (E.D.Mo. 2012)
    • Heller v. HRB Tax Group, Inc., 287 F.R.D. 483 (E.D.Mo. 2012)
    • Heller v. HRB Tax Group Inc., 2011 WL 4834260 (E.D.Mo.) (October 11, 2011)
    • Trotter v. Mitchell, Maax Spas and Emerson Electric Co., 446 F. Supp. 2d 967 (W.D.Ar. 2006)
    • Arnold v. Louisville Ladder Group LLC, 2004 WL 5572033 (C.D.Ill.) (February 9, 2004)
    • Haynes v. Louisville Ladder Group LLC, 341 F. Supp. 2d 1064 (E.D.Ar. 2004)
    • Monsanto Co. v. Scruggs, 342 F. Supp. 2d 568 (N.D.Ms. 2004)
    • Monsanto Co. v. Scruggs, 342 F. Supp. 2d 584 (N.D.Ms. 2004)
    • Monsanto Co. v. Scruggs, 342 F. Supp. 2d 602 (N.D.Ms. 2004)
    • Monsanto Co. v. S.B.D. Inc., 2004 WL 4965468, 2004 Bankr. LEXIS 2468 (Bkrtcy.E.D.Mo.) (July 6, 2004)
    • Monsanto Co. v. Swann, 308 F. Supp. 2d 937 (E.D.Mo. 2003)
    • Monsanto Co. v. Scruggs, 249 F. Supp. 2d 746 (N.D.Ms. 2001)
Community Leadership
  • Saint Patrick's Day Parade Committee

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