A law firm focused on trademark clearance, registration, and related counseling.
Long Run Legal LLC is a law firm focused on trademark matters. The firm assists businesses, founders, and brand owners in selecting, registering, and protecting trademarks, primarily through federal trademark registration before the United States Patent and Trademark Office.
Much of the firm’s work begins with trademark clearance and risk assessment, helping clients evaluate proposed marks and make informed branding decisions. The firm prepares and prosecutes trademark applications and assists clients in responding to Office Actions and other issues that arise during examination.
Long Run Legal also advises clients on practical issues that accompany trademark ownership and use. This may include guidance on branding and clearance strategy, responding to or issuing cease-and-desist letters, addressing online takedown issues, managing post-registration filings, and advising on early-stage trademark disputes.
Our Services

• Trademark clearance searches and risk assessment
• Federal trademark application preparation and filing
• Responses to USPTO Office Actions
• Statements of Use, extensions, and other post-application filings
• Trademark maintenance and renewal filings
• Advice regarding trademark use, branding, and pre-litigation disputes
David O'Brien
Founder & Trademark Attorney
I’m David O’Brien, founder of Long Run Legal LLC. I advise clients on trademark clearance, registration, and related trademark issues. Outside my legal practice, I enjoy trail running, audiobooks, and time with family and friends.
★★★★★
★★★★★
David was very responsive and asking all the right questions making it very easy steering us through the process. Very satisfied with his service - and will be using them again soon for further Trademark guidance. I recommend them as a first class resource who are helpful, knowledgeable and nice to work with.
Proto Edge
Lisa Crandall (Reed)
David helped us register our trademark for our brand. He is so knowledgable, helpful, and all around great to work with. There are so many complexities to navigate and he made them easy to understand which allowed us to make informed decisions. So great to work with and HIGHLY recommend David for all things trademark related to help protect your brand. Thank you David!!!


Contact
651-343-2243
david@longrunlegal.com
