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About me

Eric Walter has extensive state and federal litigation experience in a wide-range of complex commercial and business cases that include: a religious conference center prevailing in a long-running corporate governance and property dispute; a major men’s retail chain defeating false advertising claims by different state-wide classes of customers; and a publicly-traded company defeating breach of fiduciary duty claims by a national class of former stockholders.


In his practice, Eric serves privately owned businesses, publicly traded companies and nonprofit corporations. A significant portion of this work involves the defending class action lawsuits brought against various business entities. Many of the cases involve allegations of fraud, false advertising, unfair trade practices and breaches of state and federal consumer protection laws.


Eric also represents clients in matters alleging breach of contract, breach of fiduciary duty, fraud, and copyright infringement. He also provides counsel in workplace cases involving claims such as discrimination and violation of non-compete and nonsolicitation provisions.


He also represents businesses and individuals in the legalized marijuana industry. He has successfully represented companies applying for state licenses to cultivate and dispense medical marijuana and its byproducts. In this area, Eric advises clients on state and federal regulations governing not only the operation of legalized marijuana businesses, but also the solicitation of and contracting with investors and other business partners.


Practice areas


  1. Litigation: 70%
    18 years, 150 cases
  2. Employment: 20%
    11 years, 30 cases
  3. Contracts: 5%
    16 years, 50 cases
  4. Administrative Law: 5%
    18 years, 120 cases



Hourly ($420-475/hour), contingent (5-10%), Free consultation (30 minutes)

Payment types:

Cash, Check, Credit card

Attorney endorsements

8 total 

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  • Michael S. Waddington

    I endorse Eric. He is a highly skilled attorney that is well respected in the legal community.


    Michael Waddington Military law Attorney
    Relationship: Fellow lawyer in community

  • Jonathan Daniel Marks

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Contact info

Armstrong Teasdale LLP

7700 Forsyth Boulevard
Suite 1800
Saint Louis, MO, 63105


ILActive And Authorized To Practice Law199905/17/2016
MOGood Standing, Active199801/08/2013
TXInactive 200807/16/2016
We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Work experience
TitleCompany nameDuration
PartnerArmstrong Teasdale2014 - Present
MemberGuilfoil Petzall & Shoemake, LLC2000 - 2014
Assistant Attorney GeneralMissouri Attorney General's Office1998 - 2000
Association namePosition nameDuration
Bar Association of MetropolitanCommittee member2014 - Present
Illinois State Bar AssociationN/A1999 - Present
Missouri State Bar AssociationN/A1998 - Present
Bar Association of Metropolitan St. LouisCommittee Chair2002 - 2014
Legal cases
Case nameOutcome
Executive Board of Missouri Baptist Convention v. Windermere Baptist Conference Center, 280 S.W.3d 678 (Mo. Ct. App. 2009)The Court held that our client was not subject to the control that the plaintiff association attempted to impose.
Hot Light Brands, L.L.C. v. Harris Realty Inc., 912 N.E.2d 258 (Ill. App. Ct. 2009)The Court held that our client's real estate was not subject to the developer's attempts to impose discretionary use restrictions.
Waldron, et al. v. Jos. A. Bank Clothiers, Inc.The Court dismissed all the claims against our client.
See all legal cases 
Publication nameTitleDate
Missouri Environmental Law & Policy ReviewBalancing Local Concerns with CERCLA Policies: The Importance of Perspective in Considering the Application of Federal Mandates1998
School nameMajorDegreeGraduated
University of Missouri - Columbia School of LawLawJD - Juris Doctor1998
University of Missouri, ColumbiaEducationBS - Bachelor of Science1995
Speaking engagements
Conference nameTitleDate
Continuing Legal EducationFalse and Deceptive Advertising Claims2015
Continuing Legal EducationEmployment Law Issues and Best Practices2012
Continuing Legal EducationE-Discovery2008