Once your business is up and running, and you have a logo, a website, brochures, photographs, slogans, packaging, etc, it is important to register for a trademark with the US Patent and Trademark Office or have copyrights. Furthermore, if you have an invention, look into applying for a patent.
A useful aid is a business lawyer. They can help identify your business’s intellectual property, advise you on what to protect or prioritize, and assist with given registration for trademarks, or copyrights. However, for patents, you need a patent lawyer.