Commercial Litigation Attorney in Chicago
Financial Markets Depth for High-Stakes Business Disputes
De Silva Law Offices brings nearly four combined decades of commercial litigation experience to Chicago businesses, with a background that goes well beyond standard courtroom practice. Attorney R. Tamara de Silva worked as a floor trader and brokerage executive before practicing law, giving the firm a technical grasp of financial market structures that most commercial litigators simply don’t have. That depth translates directly into advocacy for trading firms, hedge funds, founders, and commercial enterprises facing complex disputes.
In 2025, the firm secured substantial confidential settlements in complex federal litigation, including a class action against one of the largest trading platforms in the world and a high-stakes dispute under the Defend Trade Secrets Act. These outcomes reflect an approach that is strategic, precise, and built to present complex facts in a way courts and decision-makers can follow.
If your business is facing a commercial dispute in Chicago, contact De Silva Law Offices at (312) 500-8424 to discuss your matter.
Commercial & Business Disputes the Firm Handles
The firm’s litigation practice covers a wide range of business conflicts. Common categories under Illinois and federal law include breach of contract, breach of fiduciary duty, trade secret misappropriation under the Defend Trade Secrets Act, shareholder oppression, tortious interference, and partnership and LLC disputes. Depending on the parties and claims involved, these matters may proceed in the Circuit Court of Cook County or the U.S. District Court for the Northern District of Illinois.
Practice areas within commercial litigation include:
- Financial Markets Litigation: Disputes involving derivatives, futures, cryptocurrency, and securities, including claims against exchanges and trading platforms
- Trade Secret Misappropriation: Federal claims under the Defend Trade Secrets Act and related state law causes of action
- Breach of Contract: Commercial agreements, partnership agreements, vendor contracts, and employment-related covenants
- Shareholder & Partnership Disputes: Minority shareholder oppression, LLC member conflicts, and fiduciary duty claims
- White-Collar Defense: Fraud allegations, regulatory violations, and agency investigations
- Arbitrations & Negotiations: Matters involving traders, software developers, and self-regulatory organizations
Why Financial Markets Experience Matters in Commercial Litigation
Before practicing law, R. Tamara de Silva operated inside the financial industry as a floor trader and brokerage executive. That experience built a working knowledge of derivatives, swaps, risk management structures, and brokerage operations that doesn’t come from reading case law. When disputes involve complex financial instruments or trading conduct, the firm can engage with the technical facts directly without relying on expensive third-party consultants to explain the underlying mechanics.
The firm served as lead counsel on the first class action involving market manipulation and spoofing in the futures markets brought under Dodd-Frank, and has worked with law firms across the country on pre-indictment and white-collar defense cases tied to the financial markets. That regulatory and market-structure fluency is a practical advantage in any commercial dispute where the underlying facts are technically demanding.
The Firm’s Approach to Complex Litigation
Commercial litigation in Illinois can proceed through negotiation, mediation, arbitration, or trial. The right path depends on the contract terms, the nature of the dispute, and the client’s business objectives. De Silva Law Offices builds tailored strategies for each setting rather than defaulting to a single track.
The firm also recognizes that litigation costs can place justice out of reach. In cases it takes on, it leverages its experience to analyze complex matters efficiently and advocate effectively. Federal courts in the Northern District of Illinois apply both federal substantive law and Illinois law depending on the claims involved, making admitted federal counsel an asset when a dispute involves multiple theories. The firm has participated in private civil litigation, regulatory investigations, and arbitrations, and has advocated before the SEC, CFTC, DOJ, FINRA, and the NFA.
Recent Federal Results
In 2025, the firm achieved substantial confidential settlements in two complex federal matters: a class action against one of the world’s largest trading platforms and a Defend Trade Secrets Act dispute. One client, Peter C., described attorney de Silva as bringing a “penetrating intellect” to complex litigation, with representation that was tenacious, creative, and effective.
Federal Court Admissions & Credentials
R. Tamara de Silva is admitted to practice before the U.S. District Court for the Northern District of Illinois, the U.S. Court of Appeals for the Seventh Circuit seated in Chicago, the Supreme Court of the United States, and several other federal district courts. The firm is also a member of the federal trial bar.
The firm’s federal court experience extends beyond commercial matters to civil rights and constitutional law cases. Clients have included trading groups, brokerages, hedge funds, exchange directors, elected officials, and public figures in high-stakes federal matters.
Chicago’s Commercial Litigation Courts
The Northern District of Illinois is one of the busiest federal district courts in the country and regularly handles breach of contract, securities fraud, and trade secret claims. Cook County’s Commercial Calendar provides a dedicated docket for complex business cases when state court is the appropriate venue. Having counsel admitted in both courts and at the appellate level in the Seventh Circuit means the firm’s Chicago business litigation clients can work with counsel prepared for a case if it shifts procedural direction.
Discuss Your Commercial Dispute with De Silva Law Offices
Chicago businesses facing litigation need counsel who understands both the legal landscape and the commercial realities at stake. De Silva Law Offices is prepared to analyze your matter and develop a strategy suited to your situation and objectives.
Call (312) 500-8424 or reach out through the online contact form at desilvalawoffices.com/contact-us/ to schedule a consultation with a business litigation attorney at De Silva Law Offices.
Who the Firm Represents in Commercial Litigation
The firm’s commercial litigation clients span a range of industries and dispute types. Trading groups, brokerages, hedge funds, brokers, and exchange directors have retained the firm for financial markets disputes. Founders, businesses, and individuals in complex commercial conflicts come to the firm when the stakes are high and the facts are technically demanding. The firm has also represented clients in civil rights and constitutional law matters in federal court, reflecting a litigation practice that extends across subject matter areas.
Commercial and business litigation encompasses disputes between businesses, between co-owners, and between businesses and third parties, including vendors, customers, and competitors. The firm has handled matters involving arbitrations and negotiations with traders, software developers, and self-regulatory organizations, bringing the same level of preparation to each setting.
State & Federal Court Admissions
R. Tamara de Silva is admitted to practice in the U.S. District Court for the Northern District of Illinois, the U.S. Court of Appeals for the Seventh Circuit, the U.S. District Court for the Western District of Wisconsin, the U.S. District Court for the Northern District of Indiana, the U.S. District Court for the Eastern District of Wisconsin, the U.S. District Court for the Western District of Michigan, and before the Supreme Court of the United States. The firm is a member of the federal trial bar and has collaborated with law firms across the country on complex litigation matters.
Full-Spectrum Litigation Representation
The firm’s representation doesn’t begin at the courthouse door. Pre-litigation strategy, demand letters, cease-and-desist notices, and early negotiation can resolve commercial disputes before they reach trial and reduce costs for all parties. When arbitration clauses in commercial contracts control the dispute resolution process, the firm has the experience to enforce or challenge those provisions depending on where the client’s interests lie.
For disputes that proceed to federal regulatory proceedings, De Silva Law Offices has advocated before the SEC, CFTC, DOJ, FINRA, and the NFA. Whether the matter calls for negotiation, arbitration, regulatory defense, or full courtroom litigation, the firm builds a strategy around the client’s specific objectives.
Contact De Silva Law Offices About Your Business Dispute
For businesses and individuals throughout Chicago facing commercial disputes in state or federal court, De Silva Law Offices offers the federal admissions, financial industry background, and litigation track record to handle complex matters effectively. Call (312) 500-8424 or submit the online contact form to schedule a consultation with a commercial litigation attorney.
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ExperienceWith a robust professional journey spanning over two decades, R Tamara de Silva has fostered an extensive repertoire of legal insights, finely honed strategies, and a profound understanding of intricate legal nuances.
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Proven Track RecordLead counsel on the first class action involving market manipulation and spoofing in the futures markets under Dodd-Frank.
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Specialization
Specialization in the law governing the trading markets, combined with an industry insider’s understanding equal unparalleled expertise.