Trusted commercial litigation lawyers serving clients across Costa Mesa for over 26 years.

If your company has been sued or dragged into a serious business dispute in Costa Mesa, the steps you take early can determine everything that follows. A fight over a contract, a partnership, or who controls a company puts real money and your reputation at risk. The Costa Mesa, CA commercial litigation lawyer at Ghassemian Law Group has defended companies in disputes like these for more than two decades. We focus on high-stakes matters, often representing clients sued for six figures or more. Call our office for a free consultation.

Commercial Litigation Lawyer in Costa Mesa, CA

Commercial litigation is the process of resolving business disputes through the court system. It covers disagreements between companies, owners, partners, and shareholders, usually when money, contracts, or control of a business is on the line. Some of these cases settle quietly, while others go all the way to trial. Commercial litigation overlaps heavily with business litigation, and many people use the two terms to mean the same thing.

A commercial litigation attorney represents one side in that fight. At Ghassemian Law Group, our work runs from the first demand letter through discovery, motions, and trial in both state and federal court. We usually represent the party defending against a large claim, often a company or owner sued for six figures or more, though we also pursue cases for businesses that have been wronged. Either way, the goal is the same. Protect what our client has built, whether that means a contract, an ownership stake, or the company itself.

Types of Commercial Litigation Cases We Handle in Costa Mesa

Business disputes come in many forms, and each one carries its own pressure points. Our commercial litigation attorneys in Costa Mesa handle the full range of conflicts that companies and their owners run into. These are the matters we take on most often.

• Breach of contract. One side fails to do what the agreement required. These cases turn on proving the terms and the breach, and they can involve written deals or even verbal contracts.
• Shareholder disputes. Owners of a company fall out over money, control, or the direction of the business. We represent shareholders fighting to protect their stake and their voice, including governance battles that threaten the future of the company.
• Partnership disputes. Partners disagree about money, responsibilities, or whether to go their separate ways. We handle the legal and financial untangling that follows.
• Breach of fiduciary duty. Someone in a position of trust puts their own interests first. We pursue and defend claims involving the fiduciary duty owed to a company or its owners.
• Unfair competition. A competitor crosses a legal line through deceptive or improper conduct. We help businesses stop the harm and recover what they have lost.
• Trade secret disputes. Confidential information follows a former employee or partner. These cases often move fast and demand quick action to limit the damage before it spreads.
• Business fraud. A deal was built on lies or hidden facts. We litigate claims where deception caused real financial harm.
• Construction litigation. Owners, contractors, and developers clash over payment, delay, or defective work. Our construction litigation work runs deep, including public works and complex multi-party matters.
• Insurance coverage matters. When an insurer and a policyholder disagree, we can serve as independent counsel protecting the policyholder’s interests.

Why Choose Ghassemian Law Group as my Commercial Litigation Lawyer in Costa Mesa, CA?

Decades of Southern California Litigation Experience

Mahyar Ghassemian, built this firm around business and construction litigation. She spent years litigating for well-known Southern California firms before leaving a partnership at an established civil litigation practice in 2010 to start her own. That firm became Ghassemian Law Group in 2013. Our business litigation lawyer in Costa Mesa, CA earned her law degree Cum Laude in 1999 and has handled commercial disputes ever since. She also stays close to the local business community, volunteering with groups like the Orange County Bar Association and NAWBO.

Results That Protect What You Have Built

We take on disputes where the stakes are high, often for clients sued for six figures or more. Many of them come to us after being served, worried about personal liability or the survival of their company. Our results include defending a general contractor whose long-running public works contract was on the line and pulling clients out of a shareholder dispute with their equity intact. Across contract, partnership, and corporate fights, we have helped business owners protect millions of dollars in value. We have defended construction, contract, and corporate disputes for clients ranging from small businesses to multinational companies. Consultations are free, so there is no cost to learn where your case stands.

Understanding Commercial Litigation Cases

Claims, Defenses, and Damages in Commercial Litigation

Most business disputes come down to a few basic issues: the promise that was made, what went wrong, and who is responsible for the loss. The details change from case to case. A breach of contract claim looks different from a fraud claim, and the strategy shifts with it. Still, several concepts come up again and again.

• The claim. Every case starts with a legal theory, such as a broken contract, a breach of fiduciary duty, or fraud. The theory decides what has to be proven.
• The defense. Being sued is not the same as being liable. A strong defense can attack the facts, the contract language, the damages math, or the other side’s own conduct.
• Damages. In most business cases, damages come down to money lost because of what the other party did. Courts generally try to put the wronged party where they would have been if the deal had gone as promised. That can include lost profits, unpaid amounts, and other measurable financial harm.
• Equitable relief. Sometimes money alone will not fix the problem. A court can order a party to stop certain conduct or to follow through on an obligation.

Important Aspects of a Commercial Litigation Case

A business lawsuit is part legal fight and part business decision. A few things matter more than people often expect.

• Documentation. Contracts, emails, invoices, and text messages frequently decide who wins. The paper trail tends to matter more than anyone’s memory.
• Cost versus benefit. Litigation takes time and money. Part of our job is helping you weigh what a claim is realistically worth pursuing or defending.
• Deadlines. Business claims carry filing deadlines, and missing one can end a case before it starts.
• Leverage. Most disputes settle. A strong, well-prepared position early usually leads to a better outcome later.

Commercial Litigation Case Timeline

No two cases move at the same pace, and the length of a lawsuit depends on its complexity and how hard each side fights. Some resolve in months. Others take years. Still, most commercial cases follow a familiar path.

• Pre-suit. Demand letters and negotiation, sometimes ending in an early resolution before anything is filed.
• Pleadings. The complaint and answer that frame what the dispute is about.
• Discovery. Document exchange, written questions, and depositions. This is usually the longest stretch.
• Motions and mediation. Each side tests the strength of the other’s case, and many disputes resolve here.
• Trial. If no settlement is reached, a judge or jury decides the outcome.

What To Bring to Your Commercial Litigation Consultation

The more we can review up front, the faster we can tell you where you stand. For a first meeting, it helps to gather a few things.

• The contract or agreement at the center of the dispute.
• Any court papers you have been served with, such as a summons or complaint.
• Key emails, invoices, and letters exchanged with the other side.
• A short timeline of what happened and when.

California Legal Resources for Commercial Litigation Cases

Business owners who want to understand the framework behind their dispute have several official resources to lean on. None of these replace legal advice, but they are solid starting points.

• Orange County Superior Court: Offers self-help guidance for civil cases, where most local business disputes are filed.
• Filing a Lawsuit: The court’s page explains how a civil case formally begins.
• Statewide, the California Courts self-help center breaks down the civil litigation process.
• California Secretary of State: Keeps records and filings for corporations, LLCs, and partnerships.

Reach Out to Ghassemian Law Group to Schedule a Consultation

If your business is dealing with a dispute or a lawsuit in Costa Mesa, we are ready to help you understand your options. We will listen to what happened, explain how the law applies, and walk you through the paths ahead. There is no cost to start the conversation, and we aim to respond quickly once you reach out. Contact us to set up a free consultation.