Atty. John K Lassen
John K Lassen is a lawyer practicing taxation, securities, business law and 3 other areas of law. John received a B.A. degree from Yale University in 1964, and has been licensed for 55 years.
Business Law & More Attorney · Serving Wilmington, DE · 55+ Years Experience
Profile Summary
About John K Lassen at a Glance
John K Lassen is a Vice Chmn. & CEO based in Wilmington, Delaware. They have 55+ years of legal experience, licensed to practice since 1971. Their practice focuses on formation, business, tax, m&a, and securities. Admitted to practice in Delaware (1971). Educated at University of Pennsylvania (J.D., 1967) and Yale University (B.A., 1964). Serves clients in Wilmington, DE and the surrounding metropolitan area.
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About John K Lassen
- John K Lassen is a lawyer practicing taxation, securities, business law and 3 other areas of law
- John received a B.A. degree from Yale University in 1964, and has been licensed for 55 years
- John practices in Wilmington, DE
Practice Areas Explained
John K Lassen's Areas of Legal Practice
Each practice area below reflects the types of cases John K Lassen handles, with a practical overview of what that area of law involves and how it may apply to your situation in Wilmington.
Business Formation in Wilmington
John K Lassen is one of 35,326 formation attorneys indexed nationally. Browse formation attorneys in Delaware →
Business & Corporate Law in Wilmington
Business attorneys advise founders and growing companies on entity formation, contracts, financing, M&A, and dispute resolution.
John K Lassen is one of 497,491 business attorneys indexed nationally. Browse business attorneys in Delaware →
Tax Law in Wilmington
Tax attorneys handle IRS audits, tax debt, international tax, estate planning, and tax court litigation.
John K Lassen is one of 84,606 tax attorneys indexed nationally. Browse tax attorneys in Delaware →
Mergers & Acquisitions in Wilmington
John K Lassen is one of 49,430 m&a attorneys indexed nationally. Browse m&a attorneys in Delaware →
Securities Law in Wilmington
John K Lassen is one of 64,075 securities attorneys indexed nationally. Browse securities attorneys in Delaware →
Jurisdictional Context
Why Local Counsel Matters in Wilmington
Practicing law in Delaware. Legal matters in Delaware are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Wilmington are typically filed in the local municipal court or the appropriate Delaware state district court, depending on subject matter and amount in controversy. An attorney licensed in Delaware brings working knowledge of local procedural deadlines, judicial practices in this venue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in Delaware courts without local counsel or pro hac vice admission.
Wilmington Courts and Legal Process
Choosing a Wilmington-based attorney means your counsel already knows the local docketing timelines, preferred filing formats, and how individual judges typically rule on procedural motions — details that only come from practicing in this jurisdiction day after day. That local familiarity can translate to better strategy, faster filings, and fewer costly surprises.
Looking for additional Delaware attorneys? Browse all attorneys in Wilmington or all attorneys in Delaware.
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Professional Profile
Why Clients in Wilmington Choose John K Lassen
Selecting an attorney is one of the most consequential decisions you can make when a legal matter arises. Below are the core qualities that distinguish John K Lassen's practice in the field of formation, business, tax, m&a, and securities.
Decade-Tested Legal Experience
John K Lassen brings 55+ years of hands-on legal practice — enough to have navigated the recurring fact patterns, procedural traps, and negotiation dynamics that shape case outcomes.
Broad Practice Area Coverage
Covering formation, business, and tax, John K Lassen can address the full spectrum of a client's legal needs without requiring referrals to separate specialists for each issue.
Local Presence in Wilmington
A Wilmington-based practice means John K Lassen attends hearings in the same courthouses, knows the local clerks, and understands the unwritten scheduling norms that affect every case filed here.
Case Types
Common Legal Issues John K Lassen Handles in Wilmington
Below is a representative sample of the types of matters John K Lassen has experience with under Delaware law. If your situation involves one of these case categories, this attorney may be well positioned to help you understand your options.
This list is illustrative, not exhaustive. Contact John K Lassen directly to discuss the specifics of your situation.
Search Reference
How People Find John K Lassen Online
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John K Lassen's Practice Areas & Specializations
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