Colleen C. Cook

[email protected] Direct Line:617.778.9135


Colleen is an experienced trial lawyer, focusing her practice on complex business, employment, commercial real estate, regulatory, and tort litigation. Colleen, is “Of Counsel” to the firm and has spent the past eighteen years representing private and public clients at every level of Massachusetts state and federal courts. Colleen is a no nonsense lawyer who aims for the most practical way to resolve a conflict and reach her client’s goals with maximum efficiency.  Colleen’s fiercely competitive spirit makes her ready to tackle any litigation matter — routine or cutting-edge.


  • Appointed as Special Assistant Attorney General to defend Governor of the Commonwealth of Massachusetts, Secretary of Health and Human Services, and Department of Public Health in cases filed concerning registration of dispensaries under Medical Marijuana law. Successfully defeated several preliminary injunction motions.
  • Negotiated takeover of $12 million line of business for regional staffing company and avoided litigation involving non-solicitation provision.
  • Trial counsel to plaintiffs in month-long jury case in the Business Litigation Session against brokerage firm for aiding and abetting theft of $8.6 million of escrow funds.
  • Represented distributor in two-week jury trial in Norfolk Superior Court resulting in $6.4 million verdict for breach of distribution agreement and fraud by manufacturer.
  • Won million-dollar victory in jury trial for railroad corporation who sued municipality for breach of long-term waste hauling contract; affirmed by Supreme Judicial Court, Bay Colony Railroad Corp. v. Town of Yarmouth, SJC-11608, Slip Op. Jan. 29, 2015.
  • Handled variety of matters for MBTA, including employment-related cases and defense of Federal Employer Liability (FELA) actions.
  • Defeated preliminary injunction motion filed by competitor to national recycling business client that sought to restrain client’s operations throughout New England.
  • Obtained preliminary injunction to enforce non-compete agreement against former employee, which led to a speedy resolution of entire litigation.
  • Prevailed on numerous summary judgment motions, including enforcing commercial real estate developer’s offer to purchase property in Newton, Massachusetts.
  • Trial counsel to commercial tenant in bench trial in Business Litigation Session resulting in ruling against landlord with national operations for breach of implied covenant of good faith and fair dealing.
  • Defended employer-client in a case alleging violations of the Fair Labor Standards Act, the Massachusetts Overtime Act, and the Massachusetts Wage Act, which decision was affirmed on appeal to the First Circuit and spotlighted in the National Law Journal and Massachusetts Lawyers Weekly.
  • Tried case of first impression in United States District Court involving ERISA deferred compensation plans.
  • Leveraged settlement negotiations by winning two summary judgment motions for public entity client in employment discrimination case.
  • Represented small business at trial and G.L. c. 93A phase in Middlesex Superior Court awarding double damages and attorneys’ fees against competitor for theft of confidential trade secrets.
  • Prevailed in arbitrations, including winning $12.9 million award and successfully defending alleged breach of manufacturer’s sales representative agreement.
  • Filed and opposed petitions for certiorari to the United State Supreme Court.


Colleen kicked off her legal career with a clerkship for the Massachusetts Superior Court.  Colleen is a 1992 graduate of the University of Vermont and graduated from Northeastern University School of Law in 1997.  She also attended the Program for Women in Politics and Government at the University of Massachusetts after college.

Colleen was honored by Women’s Business Boston Journal in 2009 as one of the top 10 lawyers in Massachusetts, New Hampshire and Rhode Island for her “top notch legal services and advice” to corporate clients.

Professional Activities/Affiliations

Colleen is admitted to the Court of Massachusetts, the U.S. District Court for the District of Massachusetts, the First Circuit Court of Appeals, and the United States Supreme Court

In addition, Colleen is a proud Board member of the Massachusetts Children’s Trust.  Colleen also served as a member of the Conservation Commission for her city for several years and was invited to serve as a mock judge at Yale University’s national moot court competition.  Colleen belongs to the Boston Bar and Massachusetts Bar Associations and is active in her community at St. Michael’s Parish in North Andover. Colleen is also a member of Member of ProVisors (Boston IV), the Boston Women’s Affinity Group-ProVisors, the Merrimack Valley Chamber of Commerce, and MassDLA’s Employment Law Committee.