Trademark Attorney / Law Firm
David O'Brien – Trademark Portfolio
David O'Brien has 11 trademark filings recorded with the United States Patent and Trademark Office (USPTO). Of these, 4 trademarks are successfully registered — a 67% registration rate, with an additional 5 applications currently pending. The strongest areas of practice include Class 41 (Education & Entertainment) and Class 45 (Legal & Security Services). Filing activity has been recorded from 2014 through 2025, spanning 4 years.
Showing of trademarks Trademarks
Practice Areas by Trademark Class
David O'Brien's trademark practice covers 10 Nice Classification classes, representing the range of industries and goods/services handled in their USPTO filings.
Education; providing of training; entertainment; sporting and cultural activities
Legal services; security services for the protection of property and individuals
Bleaching preparations and other substances for laundry use; cleaning, polishing, scouring
Pharmaceutical and veterinary preparations; sanitary preparations for medical purposes
Machines and machine tools; motors and engines; machine coupling and transmission components
Advertising; business management; business administration; office functions
Scientific and technological services; industrial analysis and research services
Scientific, nautical, surveying, photographic, cinematographic, optical apparatus and instruments
Frequently Asked Questions
How many trademark applications has David O'Brien filed?
David O'Brien has filed 11 trademark applications with the United States Patent and Trademark Office (USPTO). Of these, 4 registered, 5 pending, 1 abandoned, 1 cancelled.
What trademark classes does David O'Brien specialize in?
David O'Brien has filed trademarks across 10 Nice Classification classes. The most common practice areas include Class 41 (Education & Entertainment), Class 45 (Legal & Security Services), Class 3 (Cosmetics & Cleaning), Class 5 (Pharmaceuticals), Class 7 (Machinery). Class 41 covers education; providing of training; entertainment; sporting and cultural activities.
How long has David O'Brien been filing trademarks?
David O'Brien's trademark filing history with the USPTO spans from 2014 to 2025, covering 11 years of trademark practice. During this period, David O'Brien has handled 11 trademark applications.
What is David O'Brien's trademark registration success rate?
David O'Brien has a 67% trademark registration rate, with 4 out of 6 resolved applications resulting in successful registration. Currently, 5 applications are pending review.