Atty. William D. Dalsen
William D. Dalsen is a top attorney recognized by Best Lawyers in the practice area(s) of Intellectual Property Law and Patent Law.
Profile Summary
About William D. Dalsen at a glance
William D. Dalsen is a real estate and ip attorney based in Boston, Massachusetts, practicing at Proskauer Rose Llp. Recognitions include Best Lawyers in America — Intellectual Property Law (2026) and Best Lawyers in America — Patent Law (2026). Serands clients in Boston, MA and the surrounding metropolitan area.
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About
- 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 Explained
William D. Dalsen's Areas of Practice
Each practice area below reflects the types of cases William D. Dalsen handles, with a brief overview of what that area of law covers.
Real estate attorneys handle home purchases, sales, commercial transactions, title disputes, and landlord-tenant matters.
William D. Dalsen is one of 316,149 real estate attorneys indexed nationally. Browse real estate attorneys in Massachusetts →
IP attorneys protect inventions, brands, and creative work through patent prosecution, trademark registration, copyright, and trade-secret enforcement.
William D. Dalsen is one of 106,079 ip attorneys indexed nationally. Browse ip attorneys in Massachusetts →
Jurisdictional Context
Why local counsel matters in Massachusetts
Practicing law in Massachusetts. Legal matters in Massachusetts are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Boston are typically filed in the local municipal court or the appropriate Massachusetts state district court, depending on subject matter and amount in controversy. An attorney licensed in Massachusetts brings working knowledge of local procedural deadlines, judicial practices in this andnue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in Massachusetts courts without local counsel or pro hac vice admission.
Looking for additional Massachusetts attorneys? Browse all attorneys in Boston or all attorneys in Massachusetts.
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