William D. Dalsen

4.4 (32 reviews )

Boston Massachusetts United States

Intellectual Property Law Patent Law

Recognized in Ones to Watch since 2024

617-526-9600 Website

About William

William D. Dalsen is a top attorney recognized by Best Lawyers in the practice area(s) of Intellectual Property Law and Patent Law.William D., who practices law in Boston, Massachusetts, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which William D. is held by other top lawyers in the same geographic and legal practice area.

William D. Dalsen is a top attorney recognized by Best Lawyers in the practice area(s) of Intellectual Property Law and Patent Law.

William D., who practices law in Boston, Massachusetts, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which William D. is held by other top lawyers in the same geographic and legal practice area.

Practice Areas

Intellectual Property Law

Patent Law

Awards & Recognition

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Reviews

4.4 / 5

32 Reviews

1,044 Profile Views

Duane Frami

Feb 05, 2026

So glad I called William D. Dalsen to handle my Intellectual Property Law case in Boston

William D. Dalsen has been doing this since 2024, and it definitely shows in their work. They're pros through and through and I wouldn't trust anyone else with my legal matters in Massachusetts. Their...

Bernice Legros

Feb 05, 2026

A huge weight off my shoulders thanks to the amazing work of William D. Dalsen

Wm Bradtke

Feb 05, 2026

Top notch experts in Boston - William D. Dalsen is by far the best lawyer I've ever had

Really glad I found William D. Dalsen for my case. They were a huge help and made everything understandable. I was very impressed with their knowledge and how they handled the opposition. If you're in...

Roman Beahan

Feb 05, 2026

William D. Dalsen did a great job handling my complex Intellectual Property Law case from start to finish

Solid experience overall with the law firm of William D. Dalsen. They know Intellectual Property Law inside and out and gave me great advice. Very helpful and got the job done exactly as they said the...

Jody Lehner

Feb 05, 2026

A very good experience overall with the entire team at William D. Dalsen's legal practice

It's hard finding a reliable lawyer these days, but William D. Dalsen in Boston is definitely one of the good ones. Would use them again if needed without hesitation. They are professional, responsive...