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

1,039 Profile Views

Hattie Walter-Reinger

Feb 05, 2026

The absolute best in Boston for Intellectual Property Law - and I mean that from the bottom of my heart

I didn't think I'd find such a good lawyer in Massachusetts, but here we are and I am thoroughly impressed. William D. Dalsen is just awesome and exceeded all my expectations. No complaints at all! Th...

Cedric Balistreri-Hyatt

Feb 05, 2026

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

I've already told all my friends and family about William D. Dalsen. If you need Intellectual Property Law help in Massachusetts, they're the ones to see without any doubt. They are local experts who...

Marshall Marks

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...

Alfredo Satterfield

Feb 05, 2026

Many thanks to William D. Dalsen for the hard work and dedication to my legal matter

Super helpful and professional staff at William D. Dalsen's office. Thanks again for everything you did for me! It was a long journey, but you made it much easier with your constant support and legal...

Roberta Dickinson

Feb 05, 2026

Really helpful and compassionate service from everyone at William D. Dalsen's firm