Atty. Jonathan A. Ko

Atty. Jonathan A. Ko

Jonathan A. Ko is a lawyer practicing disability, intellectual property.

Oak Brook Oak Brook 18 yrs experience 18 year
Call (312) 796-6938 Book Appointment

Disability & More Attorney · Serving Oak Brook, IL · 18+ Years Experience

Profile Summary

About Jonathan A. Ko at a Glance

Jonathan A. Ko is a ip and ssd attorney based in Oak Brook, Illinois. They have 18+ years of legal experience, licensed to practice since 2008. Admitted to practice in Illinois (2008), California (2009), and Washington (2015). Provides legal services in Spanish. Serves clients in Oak Brook, IL and the surrounding metropolitan area.

Verified attorney profile · Updated October 2026

About Jonathan A. Ko

  • Jonathan A. Ko is a lawyer practicing disability, intellectual property
  • Jonathan has been licensed for 18 years
  • Jonathan practices in Oak Brook, IL

Practice Areas Explained

Jonathan A. Ko's Areas of Legal Practice

Each practice area below reflects the types of cases Jonathan A. Ko handles, with a practical overview of what that area of law involves and how it may apply to your situation in Oak Brook.

Intellectual Property in Oak Brook

IP attorneys protect inventions, brands, and creative work through patent prosecution, trademark registration, copyright, and trade-secret enforcement.

Jonathan A. Ko is one of 105,285 ip attorneys indexed nationally. Browse ip attorneys in Illinois →

Social Security Disability in Oak Brook

SSDI and SSI attorneys for disability claims, denied benefits, and Social Security appeals.

Jonathan A. Ko is one of 26,311 ssd attorneys indexed nationally. Browse ssd attorneys in Illinois →

Jurisdictional Context

Why Local Counsel Matters in Oak Brook

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

Oak Brook Courts and Legal Process

Choosing a Oak Brook-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 Illinois attorneys? Browse all attorneys in Oak Brook or all attorneys in Illinois.

Frequently Asked

Common Questions About Jonathan A. Ko

Where is Jonathan A. Ko's law office located?
Jonathan A. Ko's law practice is located in Oak Brook, Illinois. You can contact the office directly through this profile page.
What practice areas does Jonathan A. Ko handle?
Jonathan A. Ko focuses on ip, ssd. Each practice area listed reflects experience handling cases of that type in Illinois.
How long has Jonathan A. Ko practiced law?
Jonathan A. Ko has 18+ years of legal experience and has been licensed since 2008.
What languages does Jonathan A. Ko speak?
Jonathan A. Ko provides legal services in Spanish. Bilingual representation can be especially important when contracts, testimony, or court filings require accurate translation.
How can I contact Jonathan A. Ko for a consultation?
You can contact Jonathan A. Ko 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.

Professional Profile

Why Clients in Oak Brook Choose Jonathan A. Ko

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 A. Ko's practice in the field of ip and ssd.

Decade-Tested Legal Experience

Jonathan A. Ko 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.

Multi-State Bar Admission

Licensed in Illinois, California, and Washington, Jonathan A. Ko can represent clients in cases that span state lines or require counsel in multiple jurisdictions.

Broad Practice Area Coverage

Covering ip and ssd, Jonathan A. Ko can address the full spectrum of a client's legal needs without requiring referrals to separate specialists for each issue.

Local Presence in Oak Brook

A Oak Brook-based practice means Jonathan A. Ko 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 A. Ko Handles in Oak Brook

Below is a representative sample of the types of matters Jonathan A. Ko has experience with under Illinois law. If your situation involves one of these case categories, this attorney may be well positioned to help you understand your options.

Trademark registration
IP
Copyright infringement defense
IP
Patent prosecution
IP
Trade secret protection
IP

This list is illustrative, not exhaustive. Contact Jonathan A. Ko directly to discuss the specifics of your situation.

Search Reference

How People Find Jonathan A. Ko Online

Prospective clients searching for legal help in Oak Brook 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 Jonathan A. Ko.

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If any of the above matches what you searched for, you've found the right profile. Use the contact options at the top of this page to get in touch with Jonathan A. Ko directly.

Jonathan A. Ko's Practice Areas & Specializations

Languages Spoken — Legal Services Available In

Bar Admissions & Licensed Jurisdictions

Illinois
Admitted: 2008
California
Admitted: 2009
Washington
Admitted: 2015

Client Reviews & Ratings — Jonathan A. Ko

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