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Arieh Mordechai Flemenbaum

Business Attorney at Chicago, IL

5.0   4 reviews
  • State Years
    Illinois - IL 27 years
    Florida - FL 26 years
  • Licensed for 27 years
    State IL
    Acquired 1996
    Active and Authorized to Practice Law No misconduct found
  • Licensed for 26 years
    State FL
    Acquired 1997
    Membership Lapsed No misconduct found

We have not found any instances of professional misconduct for this lawyer.

About Arieh

Learn Arieh’s areas of practice.

Practice areas
  1. Business
    Arieh represents business owners - entrepreneurs, start-ups, established businesses, closely-held businesses and their management in various industries. He counsels businesses concerning formation, ownership and management issues, shareholder agreements, mergers and acquisitions, employment policies, day-to day operational issues and exit strategy planning.

    28 years

  2. Internet
    Arieh has been on the forefront of E-Commerce law and cyberlaw, assisting entrepreneurs and established businesses expand their business through the use of the internet, social media and technology. Arieh helps businesses navigate the issues of privacy, data & information security, advertising and the ever expanding role of regulations involved with emerging technologies. Arieh also counsels E-commerce/E-business and drafts website terms of use, privacy policies, and disclaimers.

    25 years

  3. Contracts and agreements
    Arieh advises businesses concerning their day-to day operations matters, including negotiating and drafting a variety of commercial contracts, purchase orders, warranties and sales forms, licensing agreements,employment policies, employment agreements, non-compete agreements and severance/release agreements. Flat rates are available for master vendor and/or customer contracts and other types of commercial contracts businesses generally need or use on a regular basis.

    28 years

  4. Estate planning
    Arieh provides affordable estate planning to individuals and families, with flat rates for Wills, living trusts (various other types of trusts) and powers of attorney. Arieh focuses on families & business owners who wish to address their business succession & exit strategy as part of their overall estate plan. Arieh also handles probate matters & probate litigation, including, Will contests, trust disputes and guardianships.

    25 years

  5. Intellectual property
    Arieh assists businesses in capturing, protecting and monetizing their intellectual property, including, copyrights, trademarks, trade secrets, proprietary information, source codes and technology. He has substantial experience in negotiating and drafting non-disclosure, non-competition and licensing agreements.

    27 years

Arieh M. Flemenbaum practices in the area of business and corporate law, business succession, internet and E-commerce, commercial real estate, and estate planning.


Arieh M. Flemenbaum counsels businesses concerning their daily operations, including reviewing, revising and drafting a variety of contracts, purchase orders, warranties and sales forms, website terms of use and disclaimers; developing employment policies, employee and executive compensation and termination/severance packages, "phantom stock" and other incentive and pension programs; addressing loans and financing needs for expansion, working capital and new ventures; advising on intellectual property issues (such as copyright and trademark protection and applications); creating strategies and implementing business succession and estate plans. 

Arieh M. Flemenbaum's practice spans several industries, but is concentrated in manufacturing, transportation, logistics, packaging, printing, software developers and integrators, e-commerce specialists, media and advertising, and commercial real estate development.


You can follow  Arieh M. Flemenbaum on Twitter at  BizLawyers (or ) for additional thoughts, issues and resources for business owners.


You can also visit  Arieh M. Flemenbaum's blog, "Chicago Business bLAWg" (or ), the blog that addresses issues effecting your business! 


Griffith & Jacobson, LLC - Chicago's Lawyers for Business.

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Griffith & Jacobson, LLC
55 West Monroe Street
Suite 3550
Chicago, IL, 60603

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5.0 / 5.0
  4 customer reviews
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Posted by Mario | September 13, 2009
Competent, proactive and efficient support, with good understanding of Small & Medium Enterprises
Ari is a very experienced professional, with a clear understanding of what Small and Medium companies need. The costs are competitive, compared to what you find in the market, but his support is outstanding, going beyond what you would expect from your lawyer. He takes personal interest in your company, what you are trying to achieve and sees to it that you are correctly guided, supported and all things from his side are delivered on time and in full. As a foreign SME coming to the US, we found lawyers here to be generally very rigid in their approach and very suspicious of foreigners. Ari has been outstanding from day one, receptive and always very fast in his responses to us. We chose him over other offers we had, because of his receptiveness, interest and general understanding of the legal requirements of business, as well as a very cost effective focus, advise and support he has provided us throughout. Generally we don't any areas of complaint regarding the work Ari has delivered. Things work well, as discussed and planned. Things happen, on time and within budget normally. I would not hesitate to recommend Ari to anyone looking for a competent lawyer, focused on companies.
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Posted by David | September 2, 2009
Enthusiasctically recommend
Arieh was of great benefit to me during a time when I was expanding our domestic and international business footprint. I had to negotiate complex international business legal issues and negotiate 20+ year leases domestically on commercial and industrial assets with inherent EPA and regulatory issues. I could always count on Arieh to listen to everything I had to say, and understand the entire picture, even in an environment as complex and foriegn as the department of defense and government contracting, and still provide me with very sound counsel or opinion. Arieh was invaluable to me on several critical projects, including classified work and establishing new business operations in 2 of the highest-barrier-to-entry countries in the world, in addition to advising me on day to day business and compliance issues. I would not hesitate to hire or recommend Arieh to any entrepreneur or company seeking expert corporate counsel.
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Posted by anonymous | April 15, 2009
A most professional and caring attorney
Ari embodies everything you would want from an attorney. He is thorough, thoughtful,knowledgeable and cares for you as a both a client and person. His soft spoken voice is calming, but he can be ruthless when a situation calls for it. He is informative about both negative and positive aspects, which I have found to be of extreme value as it eliminates the element of surprise, an emotion that is not desirable in matter involving the need for a lawyer. He partners with you- and I have felt truly protected while working with him.
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Posted by anonymous | December 14, 2008
Great Legal Service and Expertise
Arieh Flemenbaum has offered my company great legal services that have gotten us set up and on the right track. His ability to sit down and walk you through his services and solutions was so helpful for me and my small business. I would definitely recommend Arieh to anyone looking for quality legal services at an affordable cost.
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  • Free Consultation 20 minutes
  • Hourly Rates $ 250-250 per hour
  • Retainer Always
Payment methods
Cash, Check, Credit Card


AVVO RATING 9.8 (Superb)

Work Experience

  • Attorney
  • Griffith & Jacobson, LLC
  • 2003 - Present
  • Associate
  • Sugar Friedberg & Felsenthal
  • 2001 - 2002
  • Associate
  • Rosenthal & Schanfield
  • 1999 - 2001
  • Associate
  • Cowan & Minetz, LLC
  • 1997 - 1999
View all work experience


  • Tulane Law School, New Orleans, Louisiana
  • JD - Juris Doctor
  • 1996
  • University of Chicago Law School
  • Visiting Scholar
  • 1996
  • Tulane University
  • BA - Bachelor of Arts
  • N/A
  • Tulane University
  • BA - Bachelor of Arts
  • N/A
View all education

Sample of Legal Cases

  • Marciniec v. Reiger
  • Won judgment for defendant


  • Chicago Bar Association, Cyber Law and Data Privacy Committee
  • Vice-Chair
  • 2011 - Present
  • Chicago Bar Association, Cyber Law and Data Privacy Committee
  • Legislative Liaison
  • 2010 - Present
  • Chicago Bar Association
  • Member
  • 1996 - Present
  • Illinois State Bar Association
  • Member
  • 1996 - Present
  • Midwest Business Brokers & Intermediaries Assoc.
  • Member
  • 2007 - 2009
View all associations

Languages Spoken

  • Hebrew
  • Spanish

Honors and Awards

  • Verified Attorney
  • 2011

Speaking Engagements

  • Commercial Real Estate Financing
  • How to Finance a Commercial Loan
  • 2007
  • Take Control of Your Finances
  • Why Do You Need an Estate Plan?
  • 2001

Attorney endorsements

Received (9)
Given (8)
Endorse Arieh
Business Attorney | Mar 21
Relationship: Fellow lawyer in community
"Arieh provides sound advice to his business clients and helps them accomplish their objectives while minimizing their risk of future liability. I highly recommend Arieh Flemenbaum."
Business Attorney | Mar 21
Relationship: Fellow lawyer in community
"Arieh is hardworking and responsive to all his client's needs. His attention to the client is what separates him from other attorneys."
Business Attorney | Mar 21
Relationship: Fellow lawyer in community
"I endorse this lawyer. Mr. Flemenbaum brings his extensive background in business, transactional, and estate law to each client he represents. His skills are beneficial to client needs"
Business Attorney | Mar 21
Relationship: Fellow lawyer in community
"I endorse this lawyer. Arieh has a great reputation for his understanding of the legal requirements that relate to small and mid-size businesses. Additionally, he provides excellent advice and support to the businesses that he serves."
Business Attorney | Mar 21
Relationship: Fellow lawyer in community
"Ari does a great job for his clients. He is shrewd strategist, tough negotiator, and a great asset to any business who hires him as their attorney."
Business Attorney | Mar 18
Relationship: Fellow lawyer in community
"Ari does a great job representing his clients. I will personally be using Ari's services and have referred several business colleagues to Arieh because he does such a thorough job in protecting their interests."
Business Attorney | Mar 18
Relationship: Worked together on matter
"Ari and I have worked together since 2003. In that time he has proven himself to be a very capable attorney who provides first-rate service to his clients."
Business Attorney | Mar 18
Relationship: Fellow lawyer in community
"Ari is an outstanding, experienced business lawyer who I highly recommend."
Business Attorney | Sep 28
Relationship: Fellow lawyer in community
"I endorse this lawyer's work."
View more endorsements
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