How to Conduct a Delaware Business Search

Conducting a Delaware business search will ensure that the name you've chosen for your potential business has not already been chosen. The process is important for state compliance and online brand identity.

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Halona Black
by

Halona Black

Allison DeSantis, J.D.
Legally reviewed by

Allison DeSantis, J.D.

Contents

Updated on: June 16, 2025
Read time: 4 min

When starting a Delaware business search, one of the first and most important steps is to ensure your desired entity name is not already the name of an existing business. This process involves researching names within the state's business registry, which is crucial to state compliance and online brand identity.

Delaware Secretary of State business search contact information

The Delaware Division of Corporations is located in the offices of the Delaware Secretary of State.

Address for Express Mail: Division of Corporations, John G. Townsend Bldg., 401 Federal Street, Suite 4, Dover, DE 19901

Address for Regular Mail: Division of Corporations, P.O. Box 898, Dover, DE 19903

Website: corp.delaware.gov

Email: corp@delaware.gov

Your Delaware business name is how customers identify your company, which is why you should give your name a great deal of thought. Here are a few key steps to take to ensure company name success in Delaware.

1. Search for a business name

Once you have chosen a name for your proposed business, you must ensure your business name has not already been registered with the Delaware Division of Corporations.

2. Ensure your business name is unique and compliant

Use the Delaware Division of Corporations' business name search tool to confirm your chosen name does not clash with existing business entities or formed businesses and meets state naming requirements, such as including "LLC" or "Corporation."

  • To begin your search, visit the Delaware name search website. Type in the potential entity name.
  • The system will give you a list of business names that match or are close to the name of your potential business and the file number.
  • Click on the business name to also see the incorporation/formation date, registered agent name, address, phone number, and residency.
  • The business names are offered free of charge.
The photo shows the name search FAQs and search bar on the state of Delaware's corporations division page.

3. Consider your online presence

Secure a domain name that matches your business name for a cohesive online presence. Check social media for availability to establish consistent branding.

4. Conduct a trademark search

Conducting a trademark search is critical to avoiding legal conflicts and infringement on existing trademarks that can result in a costly legal dispute and rebranding. Although the Delaware Division of Corporations does not offer this service, you can use the U.S. Patent and Trademark Office’s search tool or LegalZoom’s free trademark search tool. When you’re ready, LegalZoom can also help you start the process of making your trademark official.

There are several legal requirements for naming your business in Delaware.

  • Availability: Check to see if the name you have chosen has been taken in the Delaware Entity Search database.
  • Corporate suffix: The name of your business must contain a corporate suffix, entity indicator, or entity ending.
  • Punctuation: The business owner decides if the business name will include punctuation. For example, you can use "Corp" or "Corp." in the name of your business—either spelling is correct.
  • Restricted words: In most cases, Delaware businesses are restricted from using the following words: bank, trust, university, college, insurance.

Once you have fully researched your business name in the Delaware Entity Search database, you can complete the process of reserving the name online.

  1. Submit name reservation request form: The name reservation request form is available online.
  2. Pay the fee: The fee for reserving your business name is $75. Check the Division of Corporations website for updates.
  3. Form processing: The name reservation request form and payment can be submitted online, by mail, or in person at the Division of Corporations office in Dover, DE.
A photo shows what the Name Reservation Applications page looks like on the DE Division of Corporations' website.


Once your application is approved, your business name is held for 120 days. During this time, you can file formal business registration documents without worrying that someone else will take the reserved business name.

Delaware business search FAQs

Can I reserve a name before I'm ready to open my business?

Yes, it's possible to reserve a business name in Delaware even if you're not ready to start your business. Placing your reservation in the system holds it for 120 days.

What happens if my name is already used?

If your chosen business entity name is similar to another registered business in the state of Delaware, the Division of Corporations may reject your name. This prevents confusion and ensures each business has a distinct identity.

Can I renew my business name reservation?

If you're not ready to register your business within the 120-day reservation period, you can apply for a new reservation to extend the hold on your business name. However, you will be required to submit a new application and pay the reservation fee again.

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This article is for informational purposes. This content is not legal advice, it is the expression of the author and has not been evaluated by LegalZoom for accuracy or changes in the law.