Atty. Mark Earl Deffner
Mark Earl Deffner is a lawyer practicing patent application, patent infringement, intellectual property and 7 other areas of law. Mark received a M.S. degree from Northwestern University in 1998, and has been licensed for 24 years.
Intellectual Property & More Attorney · Serving Minneapolis, MN · 24+ Years Experience
Profile Summary
About Mark Earl Deffner at a Glance
Mark Earl Deffner is a Member based in Minneapolis, Minnesota, practicing at Pauly, DeVries Smith & Deffner, L.L.C.. They have 24+ years of legal experience, licensed to practice since 2002. Their practice focuses on patent and ip. Admitted to practice in Minnesota (2002). Educated at University of Minnesota (J.D., 2002) and Northwestern University (M.S. Biotechnology, 1998). Serves clients in Minneapolis, MN and the surrounding metropolitan area.
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About Mark Earl Deffner
- Mark Earl Deffner is a lawyer practicing patent application, patent infringement, intellectual property and 7 other areas of law
- Mark received a M.S. degree from Northwestern University in 1998, and has been licensed for 24 years
- Mark practices at Pauly, DeVries Smith & Deffner, L.L.C. in Minneapolis, MN
Practice Areas Explained
Mark Earl Deffner's Areas of Legal Practice
Each practice area below reflects the types of cases Mark Earl Deffner handles, with a practical overview of what that area of law involves and how it may apply to your situation in Minneapolis.
Patent Law in Minneapolis
Mark Earl Deffner is one of 20,632 patent attorneys indexed nationally. Browse patent attorneys in Minnesota →
Intellectual Property in Minneapolis
IP attorneys protect inventions, brands, and creative work through patent prosecution, trademark registration, copyright, and trade-secret enforcement.
Mark Earl Deffner is one of 105,285 ip attorneys indexed nationally. Browse ip attorneys in Minnesota →
Jurisdictional Context
Why Local Counsel Matters in Minneapolis
Practicing law in Minnesota. Legal matters in Minnesota are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Minneapolis are typically filed in the local municipal court or the appropriate Minnesota state district court, depending on subject matter and amount in controversy. An attorney licensed in Minnesota 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 Minnesota courts without local counsel or pro hac vice admission.
Minneapolis Courts and Legal Process
Choosing a Minneapolis-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 Minnesota attorneys? Browse all attorneys in Minneapolis or all attorneys in Minnesota.
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Professional Profile
Why Clients in Minneapolis Choose Mark Earl Deffner
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 Earl Deffner's practice in the field of patent and ip.
Decade-Tested Legal Experience
Mark Earl Deffner brings 24+ 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 patent and ip, Mark Earl Deffner can address the full spectrum of a client's legal needs without requiring referrals to separate specialists for each issue.
Local Presence in Minneapolis
A Minneapolis-based practice means Mark Earl Deffner 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 Earl Deffner Handles in Minneapolis
Below is a representative sample of the types of matters Mark Earl Deffner has experience with under Minnesota 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 Earl Deffner directly to discuss the specifics of your situation.
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How People Find Mark Earl Deffner Online
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Mark Earl Deffner's Practice Areas & Specializations
Education & Law School Background
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