Atty. John de Leon
John de Leon is a lawyer practicing business law, commercial law, contracts and 8 other areas of law. John received a degree from UC Berkeley SOL Boalt Hall, Berkeley, CA, and has been licensed for 18 years.
Business Law & More Attorney · Serving Rancho Cucamonga, CA · 18+ Years Experience
Profile Summary
About John de Leon at a Glance
John de Leon is a contracts, trusts, probate, personal injury, and employment attorney based in Rancho Cucamonga, California. They have 18+ years of legal experience, licensed to practice since 2008. Admitted to practice in California (2008). Educated at University of California at Berkeley, Boalt Hall School of Law (JD, 2008) and UC Berkeley SOL Boalt Hall, Berkeley, CA Univ of Southern Calif, Los Angeles, CA (—). Serves clients in Rancho Cucamonga, CA and the surrounding metropolitan area.
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About John de Leon
- John de Leon is a lawyer practicing business law, commercial law, contracts and 8 other areas of law
- John received a degree from UC Berkeley SOL Boalt Hall, Berkeley, CA, and has been licensed for 18 years
- John practices in Rancho Cucamonga, CA
Practice Areas Explained
John de Leon's Areas of Legal Practice
Each practice area below reflects the types of cases John de Leon handles, with a practical overview of what that area of law involves and how it may apply to your situation in Rancho Cucamonga.
Contracts in Rancho Cucamonga
John de Leon is one of 76,101 contracts attorneys indexed nationally. Browse contracts attorneys in California →
Trusts in Rancho Cucamonga
John de Leon is one of 103,428 trusts attorneys indexed nationally. Browse trusts attorneys in California →
Probate in Rancho Cucamonga
John de Leon is one of 127,041 probate attorneys indexed nationally. Browse probate attorneys in California →
Personal Injury in Rancho Cucamonga
Personal injury attorneys help accident victims recover compensation for medical bills, lost wages, and pain & suffering. Most work on contingency — no fee unless you win.
John de Leon is one of 262,557 personal injury attorneys indexed nationally. Browse personal injury attorneys in California →
Employment Law in Rancho Cucamonga
Employment lawyers represent workers in wrongful termination, discrimination, harassment, wage & hour disputes, and severance negotiations.
John de Leon is one of 167,770 employment attorneys indexed nationally. Browse employment attorneys in California →
Jurisdictional Context
Why Local Counsel Matters in Rancho Cucamonga
Practicing law in California. Legal matters in California are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Rancho Cucamonga are typically filed in the local municipal court or the appropriate California state district court, depending on subject matter and amount in controversy. An attorney licensed in California 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 California courts without local counsel or pro hac vice admission.
Rancho Cucamonga Courts and Legal Process
Choosing a Rancho Cucamonga-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 California attorneys? Browse all attorneys in Rancho Cucamonga or all attorneys in California.
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Professional Profile
Why Clients in Rancho Cucamonga Choose John de Leon
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 John de Leon's practice in the field of contracts, trusts, probate, personal injury, and employment.
Decade-Tested Legal Experience
John de Leon brings 18+ 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 contracts, trusts, and probate, John de Leon can address the full spectrum of a client's legal needs without requiring referrals to separate specialists for each issue.
Local Presence in Rancho Cucamonga
A Rancho Cucamonga-based practice means John de Leon 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 John de Leon Handles in Rancho Cucamonga
Below is a representative sample of the types of matters John de Leon has experience with under California 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 John de Leon directly to discuss the specifics of your situation.
Search Reference
How People Find John de Leon Online
Prospective clients searching for legal help in Rancho Cucamonga commonly use a combination of the attorney's name and their specific legal need. The following search terms frequently lead people to this profile and to attorneys like John de Leon.
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John de Leon's Practice Areas & Specializations
Education & Law School Background
Bar Admissions & Licensed Jurisdictions
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