Atty. Mark P. Guerrera
Mark P. Guerrera is a lawyer practicing complex commercial litigation, securities litigation, alternative dispute resolution and 10 other areas of law.
Alternative Dispute Resolution & More Attorney · Serving Washington, DC · 32+ Years Experience
Profile Summary
About Mark P. Guerrera at a Glance
Mark P. Guerrera is a Partner based in Washington, District of Columbia, practicing at Sidley Austin Llp. They have 32+ years of legal experience, licensed to practice since 1994. Their practice focuses on contracts, business, breach of contract, class action, and whistleblower. Admitted to practice in Virginia (1994), U.S. Court of Federal Claims (1995), District of Columbia (1996), and U.S. Court of Appeals, Federal Circuit and U.S. District Court, Eastern District of Virginia (1998). Educated at George Washington University Law School (J.D., 1994) and Georgetown University (B.A., 1991). Serves clients in Washington, DC and the surrounding metropolitan area.
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About Mark P. Guerrera
- Mark P. Guerrera is a lawyer practicing complex commercial litigation, securities litigation, alternative dispute resolution and 10 other areas of law
- Mark P. received a B.A. degree from Georgetown University in 1991, and has been licensed for 32 years
- Mark P. practices at Sidley Austin LLP in Washington, DC
Practice Areas Explained
Mark P. Guerrera's Areas of Legal Practice
Each practice area below reflects the types of cases Mark P. Guerrera handles, with a practical overview of what that area of law involves and how it may apply to your situation in Washington.
Contracts in Washington
Mark P. Guerrera is one of 76,101 contracts attorneys indexed nationally. Browse contracts attorneys in District of Columbia →
Business & Corporate Law in Washington
Business attorneys advise founders and growing companies on entity formation, contracts, financing, M&A, and dispute resolution.
Mark P. Guerrera is one of 497,491 business attorneys indexed nationally. Browse business attorneys in District of Columbia →
Breach of Contract in Washington
Mark P. Guerrera is one of 5,880 breach of contract attorneys indexed nationally. Browse breach of contract attorneys in District of Columbia →
Class Action in Washington
Mark P. Guerrera is one of 26,226 class action attorneys indexed nationally. Browse class action attorneys in District of Columbia →
Whistleblower & Retaliation in Washington
Mark P. Guerrera is one of 3,523 whistleblower attorneys indexed nationally. Browse whistleblower attorneys in District of Columbia →
Jurisdictional Context
Why Local Counsel Matters in Washington
Practicing law in District of Columbia. Legal matters in District of Columbia are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Washington are typically filed in the local municipal court or the appropriate District of Columbia state district court, depending on subject matter and amount in controversy. An attorney licensed in District of Columbia 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 District of Columbia courts without local counsel or pro hac vice admission.
Washington Courts and Legal Process
Choosing a Washington-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 District of Columbia attorneys? Browse all attorneys in Washington or all attorneys in District of Columbia.
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Professional Profile
Why Clients in Washington Choose Mark P. Guerrera
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 P. Guerrera's practice in the field of contracts, business, breach of contract, class action, and whistleblower.
Decade-Tested Legal Experience
Mark P. Guerrera brings 32+ 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 Virginia, U.S. Court of Federal Claims, and District of Columbia, Mark P. Guerrera can represent clients in cases that span state lines or require counsel in multiple jurisdictions.
Broad Practice Area Coverage
Covering contracts, business, and breach of contract, Mark P. Guerrera can address the full spectrum of a client's legal needs without requiring referrals to separate specialists for each issue.
Local Presence in Washington
A Washington-based practice means Mark P. Guerrera 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 P. Guerrera Handles in Washington
Below is a representative sample of the types of matters Mark P. Guerrera has experience with under District of Columbia 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 P. Guerrera directly to discuss the specifics of your situation.
Search Reference
How People Find Mark P. Guerrera Online
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Mark P. Guerrera's Practice Areas & Specializations
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