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Experienced & Cost Effective Business Litigation

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Boston’s Top Rated Business Litigation Lawyers


Jantzen & Associates P.C. is a business litigation law firm located in downtown Boston for over 30 years. The firm has achieved extraordinary results for its business clients and regularly practices in the District Courts, Superior Courts, and Federal District Courts of the Commonwealth of Massachusetts. From representing our business clients in all types of commercial litigation, insurance litigation and real estate litigation to pursuing fiduciary fraud and theft cases, Jantzen & Associates has consistently achieved Super Lawyer status, placing the firm and its lawyers in the top 3% of business litigators in Massachusetts.

Business Litigation

Business Dissolution • Employment Law • Fiduciary Disputes • Misappropriation of Company Property • Partnership & Shareholder Disputes • Wage Payment Claims • Workers Compensation

Commercial Litigation

Breach of Contract • Commercial Debt Collections • Commercial Real Estate Lease Disputes • Contract Disputes • Purchase & Sale Disputes • Software & Technology Disputes

Fiduciary Fraud or Theft

Business Fraud Litigation • Embezzlement and Fraud • Fiduciary Fraud • Investment Institution Fraud • Software Piracy and Technology Theft • Probate and Estate Fraud

Insurance Litigation

Commercial Insurance Claims • Commercial General Liability Insurance • Fire Insurance Claims • Homeowners Claims • Commercial Automobile Insurance • Personal Automobile Insurance

Real Estate Litigation

Adverse Possession Claims • Commercial Leases • Construction and Mechanics Liens • Easement and Right of Way Disputes • Property Line Disputes • Purchase and Sale Agreements

We obtain successful results for our business clients through zealous advocacy, creative and cost-effective strategies, and decades of litigation experience.

Big Law Firm Experience. Small Law Firm Attention.

We provide personal attention and great results at a fair price.


Our attorneys specialize in business litigation. We have earned a reputation as one of Boston’s preeminent business litigation law firms. Our attorneys represent business clients in complex litigation matters at the state or federal level.

Our law firm is often selected by several of Boston’s “Big Firms” to handle certain business and commercial litigation cases. This is due to the hands-on personal attention we give to every case and the excellent results we obtain for our clients at a very reasonable cost.

Whenever possible, we resolve litigation matters through skillful negotiation. However, whether representing the plaintiff or serving as defense counsel, we approach every case with a proactive, in-depth preparation for trial.


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We Protect Your Business and Your Rights

Learn how we can help your business

We offer a free case evaluation with no obligation. We will meet with you over the phone, in our office or at your place of business.

We are experienced business and commercial litigation attorneys located in Boston, Massachusetts. We pride ourselves on being accessible to business clients throughout the Greater Boston region including Boston, Worcester, Springfield, Cambridge, Lowell, Brockton, New Bedford, Quincy, Lynn, Fall River, Cape Cod, and all of Massachusetts.

Request a free case evaluation to learn how we can help your business.

Personal Attention

Every client, every case.

Great Results

Top rated litigation attorneys.

Fair Price

Hardworking honest fees.

Questions? We've got answers.