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Petersen, Donald K. S.

Donald K. S. Petersen - Bloomfield Hills, MI

Attorney at Ray M. Toma, PC

Commerfial Transactions Lawyers in Bloomfield Hills, MI

74 W. Long Lake Road Suite 101 Bloomfield Hills, MI 48304

  • Free Consultation

Bloomfield Hills Commerfial Transactions Lawyer

Updated: 05/06/2026

Areas of Practice

  • Commerfial Transactions 50%
  • Litigaiton 50%

Litigation: 50%

Attorney Information

Overview

Don is a former Harvard Economics professor, Law School Professor, and Harvard Law School graduate who practices law with a sense of urgency. Don wrote a leading treatise on Secured Transactions which is featured on Westlaw on-line.

Don's practice is split between handing commercial transactions and pursuing litigation. His transactional experience ranges from representing the buyer of a $30 million art-auction house to representing the seller of a $50,000 piece of vacant property. Don's litigation practice ranges from successfully representing one of the largest semi-conductor manufactures in the world in a lawsuit against a competing semi-conductor manufacture to representing a mother in a custody and child-support matter.

If you need help with a real estate or contraction matter, call or email Don today.


Awards and Honors

Honors

  • Professor of the Year, 2009 - 2010
  • Professor of the Year, 2011 - 2012
  • Excellence in Legal Instruction, 2025

Education

  • Legal Education

    • Harvard Law School, Cambridge, Massachusetts, 1989
      J.D.
      Honors: cum laude
  • Non Legal Education

    • University of Chicago, Chicago, Illinois, 1986
      B.S.
      Honors: summa cum laude
      Major: Economics

Current Employment Position(s)

  • Senior Counsel

Past Positions

  • Several Law Firms, Attorney
  • Cooley Law School, Professor, 2004 - 2013

Languages

  • English (Primary)

Classes and Seminars

  • Contracts, 2026 - Present
  • Secured Transactions, 2005 - Present
  • Property Law, 2005 - 2013
  • Negotiation, Mediation, etc., 2008 - 2013
  • Anger Management, Retail Fraud, etc., 2019 - Present

Published Works

Articles

  • Security Interests in Personal Property, 3rd Edition, Thomson Reuters/West, 2016
    Treatise explainting all of Article 9 of the Unform Commercial Code; e.g., Secured Transactions.
  • Hidden Security Interests: A Secured Transaction When You Least Expect It, T.M. Cooley Journal of Pr. and Clin Law, v. 10, Issue 1, 2007
    Security interests sometimes exist where we don't excpect to find them.
  • Superhuman-Biotechnology’s Emerging Impact on the Law, Thomas M. Cooley Law Review, Vol. 24, No. 1, pp. 1–80 (2008) (with Marion Hilligan, Nelson Miller, and Chris Hastings).
  • Raymond Nimmer, Commercial Asset-Based Financing (West, 2009), Chapter 6: “Foreclosure Sales & Disposition.”
  • Raymond Nimmer, Commercial Asset-Based Financing (West, 2009), Chapter 7: “Recording and Perfection.”
  • Raymond Nimmer, Commercial Asset-Based Financing (West, 2009), Chapter 8: “Priorities and Perfection.”
  • Cyber Liability & Insurance, National Underwriter Company (2009), Chapter 1: “Understanding Intangible Assets.”
  • Cyber Liability & Insurance, National Underwriter Company (2009), Chapter 2: “Valuation of Intangible Assets.”
  • Review of The Consciousness of the Litigator by Duffy Graham, Journal of Markets & Morality, Vol. 9, No. 2, pp. 370–372 (2005) (with Nelson Miller).
  • “Fred Lasher,” in Sock It to ’Em Tigers: The Incredible Story of the 1968 Detroit Tigers, Maple Street Press (2008).
  • “Dan Petry,” in Detroit Tigers 1984: What a Start! What a Finish!, Society for American Baseball Research (2012).

Bar Admissions

  • Illinois, 1989
  • Michigan, 1991
  • Texas, 2014

Other Affiliations

  • Illinois State Bar Assocation, 1989 - Present (Member)
  • Michigan State Bar, 1991 (Member)
  • State Bar of Texas, 2014 - Present

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Contact

Google Map

Bloomfield Hills, MI

74 W. Long Lake Road
Suite 101
Bloomfield Hills, MI 48304

Directions

Phone: 248-633-8654

Fax: 248-409-1999

Email: Send a message

Website: https://www.tomalawfirm.com

  • Credit Cards Accepted
  • Free Consultations

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