Derick E. Allen
About Derick E. Allen
Derick E. Allen is a lawyer based in St. Louis, MO and has been recognized in The Best Lawyers in America® since 2017. Derick E. Allen is recognized in the following practice area:
- St. Louis, Missouri
- Patent Law
Current Firm: Armstrong Teasdale LLP
Education: Saint Louis University, J.D., graduated 1997
Location: St. Louis, MO
Nearby Lawyers
J. Bradley Young has almost thirty years of experience in all aspects of workers compensation defense in both Missouri and Illinois, including the investigation of claims, trials, and appellate work. Mr. Young has spoken before corporate organizations and at in-house client seminars for many years, and frequently lectures for nationally known seminar companies on topics relating to workers’ compensation claims, employer liability, and third-party administration of claims.
Stephanie A. Black is a top attorney recognized by Best Lawyers in the practice area(s) of Personal Injury Litigation - Plaintiffs. Stephanie A., who practices law in St. Louis, Missouri, has been recognized since 2023. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Stephanie A. is held by other top lawyers in the same geographic and legal practice area.
Attorney Nick Angelides is a shareholder at Simmons Hanly Conroy LLC. He joined the firm in 2003. He currently helps direct the legal strategy for all of the firm’s asbestos and mesothelioma cases. In addition, he oversees the firm's Los Angeles office. A veteran of more than 300 asbestos cases, Nick has extensive experience representing individuals exposed to asbestos through their work as pipefitters, sheet metal workers, ship yard workers, HVAC workers and more. His legal career span...
Litigator James G. Martin defends corporations and individuals facing high-stakes, complex business lawsuits, white collar criminal charges, and allegations of corporate governance and compliance violations. A former U.S. attorney for the Eastern District of Missouri, Jim is regularly lead defense counsel in class action and civil litigation matters, including SEC fraud and healthcare fraud in False Claims Act (FCA) litigation. Corporations also call on him to lead internal investigations rel...
Heidi M. Ottsen is a top attorney recognized by Best Lawyers in the practice area(s) of Trusts and Estates. Heidi M., who practices law in St. Louis, Missouri, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Heidi M. is held by other top lawyers in the same geographic and legal practice area.
Elizabeth S. Lenivy is a top attorney recognized by Best Lawyers in the practice area(s) of Personal Injury Litigation - Plaintiffs and Product Liability Litigation - Plaintiffs. Elizabeth S., who practices law in St. Louis, Missouri, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Elizabeth S. is held by other top lawyers in the same geographic and legal practice area.
Kelly J.H. Murrie represents major corporations in complex product liability, commercial litigation and employment matters. She appears in state and federal courts, including challenging venues such as the City of St. Louis and Jackson County in Missouri, and Madison and St. Clair counties in Illinois. Kelly also handles corporate internal investigations and white collar defense. Focusing primarily on high-exposure product liability lawsuits, Kelly represents manufacturers and suppliers in th...
James H. Ferrick is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation. James H., who practices law in St. Louis, Missouri, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which James H. is held by other top lawyers in the same geographic and legal practice area.
John S. Wallach is a top attorney recognized by Best Lawyers in the practice area(s) of Medical Malpractice Law - Plaintiffs and Personal Injury Litigation - Plaintiffs. John S., who practices law in St. Louis, Missouri, has been recognized since 2007. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which John S. is held by other top lawyers in the same geographic and legal practice area.
Patrick J. Hagerty is a native of St. Louis. He completed his undergraduate studies at Quincy College in 1981. He received his law degree in 1985 from Saint Louis University School of Law, and served as an editor of the Saint Louis University Law Journal. Mr. Hagerty is licensed to practice in Missouri and Illinois, and in federal district courts and courts of appeal in Missouri, Illinois, Michigan, Arkansas and the Sixth, Seventh and Eighth Circuits. He serves on the Board of Governors of th...
Explore and Learn
2026 Best Lawyers Awards: Recognizing Legal Talent Across the United States
by Jamilla Tabbara
The 2026 editions highlight the top 5% of U.S. attorneys, showcase emerging practice areas and reveal trends shaping the nation’s legal profession.
Gun Rights for Convicted Felons? The DOJ Says It's Time.
by Bryan Driscoll
It's more than an administrative reopening of a long-dormant issue; it's a test of how the law reconciles the right to bear arms with protecting the public.
2026 Best Lawyers Awards in Canada: Marking 20 Years of Excellence
by Jamilla Tabbara
Honoring Canada’s most respected lawyers and spotlighting the next generation shaping the future of law.
How to Sue for Defamation: Costs, Process and What to Expect
by Bryan Driscoll
Learn the legal standards, costs and steps involved when you sue for defamation, including the difference between libel and slander.
Best Lawyers 2026: Discover the Honorees in Brazil, Mexico, Portugal, South Africa and Spain
by Jamilla Tabbara
A growing international network of recognized legal professionals.
Build Your Legal Practice with Effective Online Networking
by Jamilla Tabbara
How thoughtful online networking supports sustained legal practice growth.
Blogging for Law Firms: Turning Content into Client Connections
by Jamilla Tabbara
How law firms use blogs to earn trust and win clients.
Reddit’s Lawsuit Could Change How Much AI Knows About You
by Justin Smulison
Big AI is battling for its future—your data’s at stake.
How to Choose a Good Lawyer: Tips, Traits and Questions to Ask
by Laurie Villanueva
A Practical Guide for Your First-Time Hiring a Lawyer