Atty. Jonathan Peter Diffley

Atty. Jonathan Peter Diffley

Jonathan Peter Diffley is a lawyer practicing commercial litigation, estates & trust law, general practice and 4 other areas of law. Jonathan Peter received a B.A. degree from University of Notre Dame in 2004, and has been licensed for 17 years.

Bethesda Bethesda 17 Years Experience 17 year
Call (240) 974-1025

Profile Summary

About Jonathan Peter Diffley at a glance

Jonathan Peter Diffley is a wills, trusts, business, litigation, and adr attorney based in Bethesda, Maryland. They have 17+ years of legal experience, licensed to practice since 2009. Admitted to practice in Maryland (2009) and Connecticut (2009). Educated at Columbus School of Law, Catholic University (J.D., 2009) and University of Notre Dame (B.A., 2004). Serves clients in Bethesda, MD and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Jonathan Peter Diffley is a lawyer practicing commercial litigation, estates & trust law, general practice and 4 other areas of law
  • Jonathan Peter received a B.A. degree from University of Notre Dame in 2004, and has been licensed for 17 years
  • Jonathan Peter practices in Bethesda, MD

Practice Areas Explained

Jonathan Peter Diffley's Areas of Practice

Each practice area below reflects the types of cases Jonathan Peter Diffley handles, with a brief overview of what that area of law covers.

Wills

Jonathan Peter Diffley is one of 32,113 wills attorneys indexed nationally. Browse wills attorneys in Maryland →

Trusts

Jonathan Peter Diffley is one of 94,411 trusts attorneys indexed nationally. Browse trusts attorneys in Maryland →

Business & Corporate Law

Business attorneys advise founders and growing companies on entity formation, contracts, financing, M&A, and dispute resolution.

Jonathan Peter Diffley is one of 452,854 business attorneys indexed nationally. Browse business attorneys in Maryland →

Civil Litigation

Civil litigation attorneys for breach of contract, business disputes, civil rights, and class action lawsuits.

Jonathan Peter Diffley is one of 409,070 litigation attorneys indexed nationally. Browse litigation attorneys in Maryland →

Mediation & Arbitration

Mediators and arbitrators for civil, commercial, family, and employment dispute resolution.

Jonathan Peter Diffley is one of 67,021 adr attorneys indexed nationally. Browse adr attorneys in Maryland →

Jurisdictional Context

Why local counsel matters in Maryland

Practicing law in Maryland. Legal matters in Maryland are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Bethesda are typically filed in the local municipal court or the appropriate Maryland state district court, depending on subject matter and amount in controversy. An attorney licensed in Maryland 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 Maryland courts without local counsel or pro hac vice admission.

Looking for additional Maryland attorneys? Browse all attorneys in Bethesda or all attorneys in Maryland.

Frequently Asked

Common questions about Jonathan Peter Diffley

Where is Jonathan Peter Diffley's law office located?
Jonathan Peter Diffley's law practice is located in Bethesda, Maryland. You can contact the office directly through this profile page.
What practice areas does Jonathan Peter Diffley handle?
Jonathan Peter Diffley focuses on wills, trusts, business, litigation, adr. Each practice area listed reflects experience handling cases of that type in Maryland.
How long has Jonathan Peter Diffley practiced law?
Jonathan Peter Diffley has 17+ years of legal experience and has been licensed since 2009.
Where did Jonathan Peter Diffley go to law school?
Jonathan Peter Diffley earned their education at (J.D., 2009); (B.A., 2004).
How can I contact Jonathan Peter Diffley for a consultation?
You can contact Jonathan Peter Diffley directly through this profile page. Click "Ask the Attorney" to submit a question, or "Schedule a Consultation" to book a meeting. Most claimed-profile attorneys respond within one business day.

Education

J.D.
Columbus School of Law, Catholic University
- 2009
B.A.
University of Notre Dame
- 2004

Bar Admissions

Maryland
Admitted: 2009
Connecticut
Admitted: 2009

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