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Shamus Brendan Cassidy

Business Attorney at Columbus, OH

5.0   5 reviews
  • Licensed for 15 years
    State OH
    Acquired 2008
    Active No misconduct found

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

About Shamus

Learn Shamus’s areas of practice.

Practice areas
  1. Business
    Formation, choice of entity, structure, and management; Acquisition, sale, and the merger/consolidation of business assets and business interests; Taxation; Labor and employment; Litigation; and Risk management.

    16 years, 850 cases

  2. Estate planning
    Wills, Living Wills, Durable POAs, Health Care POAs, revocable and irrevocable trusts (including GRATs, GRUTs, ILITs, GST/Dynasty trusts, CRTs, CLTs, QPRTs, and medicaid/special needs trusts). This includes asset protection, limiting exposure for individuals/owners with high risk of future liability, including many medical professionals and those involved in the real estate and/or construction industries (domestic and foreign trusts, corporations, limited liability companies, and partnerships).

    16 years, 550 cases

  3. Elder law
    Medicaid application and trusts, spend-down mitigation and avoidance regarding nursing home costs, SPIAs and gifting

    16 years, 115 cases

  4. Franchising
    Filing franchise disclosure documents, preparing and/or reviewing franchise agreements, protection of intellectual property, franchise and franchisor structure, dispute resolution, and franchise litigation.

    16 years, 90 cases

  5. Intellectual property
    Trademark/service mark, trade name, confidentiality agreements, proprietary information agreements, license agreements, and related litigation.

    16 years, 135 cases

  6. Probate
    Filing of full administrations, release from administrations, insolvent estates, guardianships, adoptions, and land sale proceedings. Also engage in trust administration as well as trust and probate litigation.

    16 years, 120 cases

  7. Real estate
    Representing clients in residential and commercial purchase/sale, leasing, development, eminent domain, annexation, sale/leasebacks, land sale contracts, 1031 like-kind exchanges, foreclosures, mortgages, promissory notes, mechanic's liens, and landlord/tenant matters.

    16 years, 120 cases

Shamus B. Cassidy is the founder and manager at Cassidy Law, Ltd. Shamus concentrates his practice in the areas of estate planning, disability/special needs planning, probate, elder law, taxation, asset protection, corporate, business, and real estate matters.  Shamus also serves as counsel to the receiver in receiverships involving businesses and/or real estate.  Concerning his business practice, Shamus represents small to medium-sized business entities and other organizations in a variety of industries and professions, including many family businesses, restaurants, dental/medical practices, and franchises. This work includes all business areas: formation, choice of entity, structure, management, acquisition, sale, merger/consolidation, taxation, franchise law (representing both franchisees and franchisors), intellectual property (including trademark/service mark and trade name filings), labor and employment, commercial loan workouts/restructuring, general business planning, and other transactional and litigation-related needs. As a part of his general business practice, Shamus utilizes his estate and succession planning experience to meet his clients' business, retirement, and estate planning goals, seamlessly transitioning a business to the next generation of owners/operators. Shamus received his law degree from Capital University Law School (J.D., magna cum laude) and his bachelor's degree from The Ohio State University (B.A., magna cum laude). Shamus is a member of the Columbus and Ohio State Bar Associations.


Cassidy Law, Ltd
7650 Rivers Edge Drive, Suite 101
Columbus, OH, 43235-1342

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5.0 / 5.0
  5 customer reviews
5 Star
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1 Star
Posted by Sara | April 15, 2015
Knowledgeable, approachable, and practical.
He is patient and down-to-earth. He takes the time to explain legal jargon and all of your options in the given legal situation so you can navigate the system successfully to meet your goals.. Aggressive when needed. Has helped me keep my money in multiple situations!
Posted by Nic | August 18, 2011
Great service and great lawyer
I used Shamus for some business and tax planning. He helped me structure my businesses in a way that protected my assets and saved taxes. He also helped me sell one of my businesses and bring on a partner for another. He is easy to work with, responsive, prompt, and intelligent.
Posted by Jennifer | February 25, 2010
The only Lawyer you'll need.
Shamus is not only highly effective and knowledgeable, but is so well associated with other esteemed and skilled professionals that he has been able to assist our family in serving our needs in so many more ways than just legal. Shamus was able to refer us to professionals who have assisted us in building our businesses, accounting professionals financial advisors, and so much more! Not only has Shamus provided us with responsive, respectful, and valuable services in estate planning, branding and business startup, but his concern and compassion coupled with never losing site of OUR best interests, while guiding us through a most difficult probate situation will never be forgotten. We will always rely on Shamus to provide us with legal guidance in all matters in the future. We have even referred several friends to Shamus. One of whom was able to overcome corporate bullying by her employer who sought to force her into choosing between her severance and other compensations due to her during a downsizing effort. Thanks to Shamus she was able to receive her severance, bonuses, unemployment insurance, and retain her health care! In summary I will never need to seek out another attorney again. Between Shamus' abilities and his trusted referrals, we will always be protected by competent, ethical, and trustworthy professionals.
Read less
Posted by anonymous | October 26, 2009
Stewart Bradbury
Shamus solved a business issue for me without breaking the bank. I have used him since then concerning several other matters, including my estate plan. He has always been cost conscious and reasonable.
Posted by anonymous | June 22, 2009
Mike Ciarello
Mr. Cassidy was attentive, reasonably priced, and delivered quality service.


  • Hourly Rates $ 145-320 per hour
  • Retainer Sometimes
Payment methods
Cash, Check, Credit Card


AVVO RATING 9.6 (Superb)

Work Experience

  • Manager
  • Cassidy Law, Ltd
  • 2014 - Present
  • Attorney
  • Kohler & Smith Co., LPA
  • 2010 - 2014
  • Attorney
  • Isaac, Brant, Ledman & Teetor, LLP
  • 2007 - 2010
  • Law Clerk
  • Barkan Neff Handelman Meizlish, LLP
  • 2006 - 2007
View all work experience


  • Capital University
  • law
  • N/A

Sample of Legal Cases

  • JAG2 & Associates, Inc. v. All Round Foods Bakery Products, Inc., Franklin County Case No. 13CV009046
  • Happy Client
  • PAP Oil v. Liberty Union Group, LLC Fairfield Co. Case No. 2013 CV 00056
  • Settlement pending
  • Estate of Kelli Haas FRANKLIN COUNTY PROBATE COURT CASE NO. 539874
  • Favorable to client
View all legal cases


  • Worthington Estate Planning Council
  • Member
  • 2014 - Present
  • Columbus Foundation
  • Professional Council
  • 2014 - Present
  • Northwest Area Professionals
  • Social Chair
  • 2011 - Present
  • Catholic Foundation of Columbus
  • Professional Advisers Committee
  • 2010 - Present
  • Columbus Bar Association (Business Tax, Intellectual Property / Tech Law, Real Property, Probate, and Estate Planning and Trust Committees)
  • Member
  • 2008 - Present
  • Ohio State Bar Association
  • Member (Tax, Elder/Special Needs & Corporation Law Committees)
  • 2006 - Present
  • BNI
  • Membership Committee
  • 2009 - 2011
View all associations

Languages Spoken

  • English

Honors and Awards

  • Rising Star - Business and Corporate
  • Super Lawyers
  • 2022
  • Top Lawyer
  • Columbus C.E.O. Magazine
  • 2022
  • Top Lawyer
  • Columbus C.E.O. Magazine
  • 2016
  • Client Distinction Award
  • Martindale-Hubbell
  • 2015
  • Preeminent 5.0 out of 5
  • Martindale-Hubbell
  • 2015
  • Law Review and top 10% of class
  • Capital University Law School
  • 2007
  • Award for highest grade in Property I and Estates & Trusts
  • CALI Excellence for the Future
  • 2005
View all awards


  • Wesbanco Education series and Trust Workshop
  • Ohio Legacy Trusts
  • 2015
  • Capital University Law Review
  • Volume 36
  • 2007
  • Capital University Law Review
  • Volume 35
  • 2006
View all publications

Speaking Engagements

  • WesBanco Trust Workshop
  • Ohio Legacy Trusts
  • 2015
  • Ask a Lawyer Night - The Annunciation Greek Orthodox Cathedral
  • Estate planning and charitable contributions
  • 2015
  • Principal Education Series
  • Estate Planning for Small Business Owners
  • 2014
  • Friday Speaker Series
  • Common End of Life Issues and Estate Planning
  • 2013
  • Edward Jones education seminar
  • Medicaid spend down and Elder Law
  • 2013
  • Quarterly Presentation
  • Business Planning: Buy-sell issues, tax structure and owner asset protection
  • 2012
  • NAP speaker series
  • Medicaid Planning and Elder Law
  • 2012
  • NAP speaker series
  • Estate Planning for Married Couples
  • 2011
  • Catholic Diocese of Columbus Estate and Financial Planning Seminar
  • Complex Estate Planning - Beyond the Basics
  • 2011
  • Nap Speaker series
  • Estate Planning and Probate
  • 2010
  • Estate Planning for 2010
  • Estate Planning in Uncertain Times
  • 2010
  • Estate Planning Basics
  • The use of trusts in your estate plan
  • 2010
  • Hilliard Bradley High School Transition Night
  • Special Needs Trusts and Guardianships
  • 2009
View all speaking engagements

Attorney endorsements

Received (11)
Given (11)
Endorse Shamus
Business Attorney | Aug 17
Relationship: Worked together on matter
"I worked with Shamus on the sale of a business. Shamus is knowledgeable, professional, and easy to communicate with. I would be happy to work with him again or recommend his services to a perspective client."
Business Attorney | Apr 02
Relationship: Worked together on matter
"I have worked with Shamus on several matters over the years and he always does a great job for my clients. He has such a vast array of knowledge that he can bring unique and interesting solutions to the table. I highly recommend him to anyone."
Business Attorney | Jun 01
Relationship: Fellow lawyer in community
"Shamus is a highly qualified attorney. I am happy to endorse him."
Estate planning Attorney | Jul 18
Relationship: Fellow lawyer in community
"Shamus is a great lawyer who understands his clients' needs, has very strong legal knowledge and technical skill, and is honest and trustworthy."
Probate Attorney | Apr 09
Relationship: Worked together on matter
"I strongly endorse this lawyer. I have worked with Shamus on contested probate cases and have found him to be very knowledgeable in probate and estate matters. He is creative in crafting solutions to difficult issues and maintains the highest ethical standards."
Business Attorney | Jun 04
Relationship: Fellow lawyer in community
"I have known Shamus for about 5 years. He has an excellent reputation in the Columbus legal community. He is a bright, hard working, and caring attorney who always puts his clients' interests first."
Business Attorney | Apr 13
Relationship: Fellow lawyer in community
"Shamus Cassidy is a quality attorney and good friend. I met Shamus over seven years ago in law school and have come to know him as honest, compassionate, and dependable. I have no hesitations recommending my clients, my friends, and my family consult with Shamus regarding their business issues (from new business formation to unraveling tax filings) and estate planning needs (from a simple will to complex trust creation). Shamus is an excellent choice for those looking to hire a competent and considerate business attorney; he has my endorsement."
Estate planning Attorney | Feb 24
Relationship: Co-worker
"Shamus's knowledge of estate planning and other succession matters allows him to help clients in all their needs. He is a devoted attorney who always has his clients' best interests in mind, and I would definitely recommend him to anyone with estate planning or business succession planning needs."
Business Attorney | Aug 28
Relationship: Fellow lawyer in community
"It is with utmost confidence that I endorse Shamus' as an attorney. Shamus is on the cutting-edge of business related legal issues and uses his knowledge to put his clients in the best possible legal position to succeed. Shamus has the necessary tenacity to solve complex problems combined with a professional and caring demeanor to help his clients resolve their legal issues. Shamus is one of the bright, young up-and-coming attorneys in the area of business law."
Estate planning Attorney | Apr 27
Relationship: Fellow lawyer in community
"Shamus is a gifted estate planning attorney. He has the unique ability to retain volumes of rule application, technical knowledge, changes in the law, and best plan advice off the top of his head. He "geeks" on estate and trust legal issues and that's an excellent quality to have in an estate planning attorney."
Estate planning Attorney | Mar 02
Relationship: Co-worker
"I highly recommend Shamus for estate planning. His understanding of the nuances of that area of the law is unmatched."
View more endorsements