Atty. Jonathan David Jay
Jonathan David Jay is a lawyer practicing trademark infringement, patent infringement, intellectual property and 1 other area of law. Jonathan received a B.A. degree from University of Minnesota-Duluth in 1983, and has been licensed for 39 years.
Intellectual Property & More Attorney · Serving Minneapolis, MN · 39+ Years Experience
Profile Summary
About Jonathan David Jay at a Glance
Jonathan David Jay is a Member based in Minneapolis, Minnesota, practicing at Leffert Jay & Polglaze, P.A.. They have 39+ years of legal experience, licensed to practice since 1987. Their practice focuses on patent, trademark, ip, and litigation. Admitted to practice in Minnesota (1987) and U.S. District Court, District of Minnesota (1988). Educated at University of Minnesota (J.D., 1987) and University of Minnesota-Duluth (B.A., 1983). Recognitions include Peer Reviewed. Serves clients in Minneapolis, MN and the surrounding metropolitan area.
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About Jonathan David Jay
- Jonathan David Jay is a lawyer practicing trademark infringement, patent infringement, intellectual property and 1 other area of law
- Jonathan received a B.A. degree from University of Minnesota-Duluth in 1983, and has been licensed for 39 years
- Jonathan practices at Leffert Jay & Polglaze, P.A. in Minneapolis, MN
Practice Areas Explained
Jonathan David Jay's Areas of Legal Practice
Each practice area below reflects the types of cases Jonathan David Jay 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
Jonathan David Jay is one of 20,632 patent attorneys indexed nationally. Browse patent attorneys in Minnesota →
Trademark Law in Minneapolis
Jonathan David Jay is one of 23,086 trademark attorneys indexed nationally. Browse trademark 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.
Jonathan David Jay is one of 105,285 ip attorneys indexed nationally. Browse ip attorneys in Minnesota →
Civil Litigation in Minneapolis
Civil litigation attorneys for breach of contract, business disputes, civil rights, and class action lawsuits.
Jonathan David Jay is one of 450,751 litigation attorneys indexed nationally. Browse litigation 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 Jonathan David Jay
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 Jonathan David Jay's practice in the field of patent, trademark, ip, and litigation.
Decade-Tested Legal Experience
Jonathan David Jay brings 39+ 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 Minnesota and U.S. District Court, District of Minnesota, Jonathan David Jay can represent clients in cases that span state lines or require counsel in multiple jurisdictions.
Broad Practice Area Coverage
Covering patent, trademark, and ip, Jonathan David Jay 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 Jonathan David Jay 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 Jonathan David Jay Handles in Minneapolis
Below is a representative sample of the types of matters Jonathan David Jay 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 Jonathan David Jay directly to discuss the specifics of your situation.
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How People Find Jonathan David Jay Online
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Jonathan David Jay's Practice Areas & Specializations
Education & Law School Background
Awards & Professional Honors
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