Atty. Mark D. Simpson
Mark D. Simpson is a lawyer practicing intellectual property litigation, ip due diligence, worldwide ip protection and 6 other areas of law.
Intellectual Property Litigation & More Attorney · Serving Philadelphia, PA · 38+ Years Experience
Profile Summary
About Mark D. Simpson at a Glance
Mark D. Simpson is a Partner based in Philadelphia, Pennsylvania, practicing at Saul Ewing Arnstein & Lehr LLP. They have 38+ years of legal experience, licensed to practice since 1988. Their practice focuses on patent, trademark, copyright, business, and ip. Admitted to practice in Pennsylvania (1988), New Jersey (1988), U.S. District Court, District of New Jersey (1988), and U.S. Court of Appeals, Federal Circuit (1989). Educated at University of Baltimore School of Law (J.D., 1988) and Temple University (A.E.T. Thomas, 1981). Serves clients in Philadelphia, PA and the surrounding metropolitan area.
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About Mark D. Simpson
- Mark D. Simpson is a lawyer practicing intellectual property litigation, ip due diligence, worldwide ip protection and 6 other areas of law
- Mark received a degree from Temple University in 1981, and has been licensed for 38 years
- Mark practices at Saul Ewing Arnstein & Lehr LLP in Philadelphia, PA
Practice Areas Explained
Mark D. Simpson's Areas of Legal Practice
Each practice area below reflects the types of cases Mark D. Simpson handles, with a practical overview of what that area of law involves and how it may apply to your situation in Philadelphia.
Patent Law in Philadelphia
Mark D. Simpson is one of 20,632 patent attorneys indexed nationally. Browse patent attorneys in Pennsylvania →
Trademark Law in Philadelphia
Mark D. Simpson is one of 23,086 trademark attorneys indexed nationally. Browse trademark attorneys in Pennsylvania →
Copyright Law in Philadelphia
Mark D. Simpson is one of 17,404 copyright attorneys indexed nationally. Browse copyright attorneys in Pennsylvania →
Business & Corporate Law in Philadelphia
Business attorneys advise founders and growing companies on entity formation, contracts, financing, M&A, and dispute resolution.
Mark D. Simpson is one of 497,491 business attorneys indexed nationally. Browse business attorneys in Pennsylvania →
Intellectual Property in Philadelphia
IP attorneys protect inventions, brands, and creative work through patent prosecution, trademark registration, copyright, and trade-secret enforcement.
Mark D. Simpson is one of 105,285 ip attorneys indexed nationally. Browse ip attorneys in Pennsylvania →
Jurisdictional Context
Why Local Counsel Matters in Philadelphia
Practicing law in Pennsylvania. Legal matters in Pennsylvania are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Philadelphia are typically filed in the local municipal court or the appropriate Pennsylvania state district court, depending on subject matter and amount in controversy. An attorney licensed in Pennsylvania 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 Pennsylvania courts without local counsel or pro hac vice admission.
Philadelphia Courts and Legal Process
Choosing a Philadelphia-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 Pennsylvania attorneys? Browse all attorneys in Philadelphia or all attorneys in Pennsylvania.
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Professional Profile
Why Clients in Philadelphia Choose Mark D. Simpson
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 Mark D. Simpson's practice in the field of patent, trademark, copyright, business, and ip.
Decade-Tested Legal Experience
Mark D. Simpson brings 38+ years of hands-on legal practice — enough to have navigated the recurring fact patterns, procedural traps, and negotiation dynamics that shape case outcomes.
Multi-State Bar Admission
Licensed in Pennsylvania, New Jersey, and U.S. District Court, District of New Jersey, Mark D. Simpson can represent clients in cases that span state lines or require counsel in multiple jurisdictions.
Broad Practice Area Coverage
Covering patent, trademark, and copyright, Mark D. Simpson can address the full spectrum of a client's legal needs without requiring referrals to separate specialists for each issue.
Local Presence in Philadelphia
A Philadelphia-based practice means Mark D. Simpson 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 Mark D. Simpson Handles in Philadelphia
Below is a representative sample of the types of matters Mark D. Simpson has experience with under Pennsylvania 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 Mark D. Simpson directly to discuss the specifics of your situation.
Search Reference
How People Find Mark D. Simpson Online
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Mark D. Simpson's Practice Areas & Specializations
Education & Law School Background
Bar Admissions & Licensed Jurisdictions
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