You can’t hand a lawsuit to a corporation — a company isn’t a person you can meet at the door. Instead, businesses are served through a designated representative called an agent for service of process. When you’re suing a corporation or LLC, serving a registered agent the right way is what gives the company legal notice and lets your case move forward. Here’s how it works in California, how to find the agent, and what happens when there isn’t one.
Get Em Process Servers is a bonded, registered, and certified California process-serving company — not a law firm. This article is general information, not legal advice. For questions about your case, consult a licensed attorney.
What a registered agent is
An agent for service of process — often called a registered agent — is the person or company a business designates to receive legal documents on its behalf. Every corporation and LLC operating in California is required to name one and keep it on file with the state.
The agent can be an individual (like an officer or attorney) or a professional national registered agent company. Serving that agent is legally equivalent to serving the business itself — which is why identifying and reaching the correct agent is the whole ballgame when you’re suing a company.
How serving a registered agent works in California, from lookup to the no-agent fallback.
National registered agents: CT Corporation and CSC
Many companies — especially larger ones and multi-state operations — don’t name an individual. Instead, they hire a national registered agent service to receive legal documents in every state where they do business. The two most common are CT Corporation and CSC (Corporation Service Company).
These agents maintain staffed offices that accept service on behalf of thousands of companies. Serving them has its own rhythm — the right office, the right intake procedure, correct documentation — and an experienced server knows how to complete it cleanly. If your defendant’s agent is one of these, a CT Corporation process server who regularly handles these serves gets it done without the fumbles.
How to find a company’s registered agent
Before you can serve, you have to identify the agent. In California, that information is public:
- Use the California Secretary of State’s bizfile search. The state maintains an online business search where you can look up corporations and LLCs and see their registered agent and address.
- Confirm the exact entity. Company names are similar and easy to confuse — verify you’ve matched the correct legal entity, not a look-alike or a former name.
- Check that the agent is current. Agents change. An outdated address or a resigned agent can derail a serve, so confirm the information is up to date.
If the entity is out of state or the record is unclear, skip tracing and careful entity research can pin down the correct agent and address so service actually reaches the company.
What if there’s no agent?
Sometimes a company has no agent on file, or the designated agent has resigned, moved, or can’t be located. That doesn’t mean the business is unservable.
California law provides a fallback: under certain conditions, when a business’s agent can’t be served with reasonable diligence, service may be made on the Secretary of State on the company’s behalf. This is a specific procedure with its own requirements — exactly the kind of situation where a registered process server’s experience keeps the serve valid. Whether the agent is missing or simply evasive, there’s usually a proper path to completing service.
Why doing it right matters for businesses and attorneys
Serving a company incorrectly is more than an inconvenience — it can cost you a default, force a re-serve, or hand the defendant an argument that they were never properly notified. For attorneys, that’s a reputational and calendar risk you don’t want.
Getting it right means identifying the correct entity and agent, serving through the proper channel (including national agents like CT Corporation and CSC), and producing court-ready proof. For the broader framework on methods and proof, see our service of process in California guide. When the defendant is a business, precision on the agent is what makes the serve hold up.
How Get Em serves registered agents
Get Em Process Servers regularly serves corporations and LLCs across California — bonded, registered, insured, and certified since 2008 — including serves on national registered agents like CT Corporation and CSC. We identify the correct entity and agent, serve through the proper channel, and deliver court-ready proof, with skip tracing when the agent is hard to pin down. See our process serving services, or order service online.
Frequently asked questions
How do you serve a corporation or LLC in California?
You serve the company’s agent for service of process — the registered agent it designated to receive legal documents. Serving that agent properly is legally equivalent to serving the business itself.
How do I find a company’s registered agent in California?
Use the California Secretary of State’s bizfile online business search to look up the entity and see its registered agent and address. Confirm you’ve matched the exact legal entity and that the agent information is current.
What is a CT Corporation or CSC serve?
Many companies use national registered agents like CT Corporation or CSC to accept legal documents on their behalf. Serving them means going to the right office and following the correct intake procedure, which an experienced process server handles routinely.
What if a company has no registered agent?
If the agent can’t be served with reasonable diligence, California law allows service on the Secretary of State on the company’s behalf under certain conditions. It’s a specific procedure best handled by a registered process server.
Can I serve the company by mailing the papers?
Serving a business has particular rules, and simply mailing documents may not satisfy them. Serving the designated agent through the proper channel is what gives the company valid legal notice — consult your attorney on the method for your case.
The bottom line
When your defendant is a business, service runs through its agent for service of process — and serving a registered agent correctly is what gives the company legal notice. That means identifying the exact entity on the Secretary of State’s records, serving the right agent (including national agents like CT Corporation and CSC), and, when there’s no agent, using the proper fallback. Get it right and your case moves; get it wrong and you risk a re-serve or a lost default. For corporate serves, an experienced registered process server is the safe bet.
Need to serve a corporation or LLC? Order service online or call (626) 499-5099 — certified since 2008, experienced with CT Corporation, CSC, and hard-to-reach agents.
Get Em Process Servers provides professional service of process and legal support in California and nationwide. This content is general information, not legal advice; for questions about your case, consult a licensed attorney.
