Trademark Attorney / Law Firm
William Zac Duffy – Trademark Portfolio
With a filing history spanning 31 years (1913–2026), William Zac Duffy has represented clients in 661 trademark filings before the United States Patent and Trademark Office (USPTO). Over the course of this practice, 416 trademarks have achieved registered status, while 133 remain pending. Areas of expertise include Class 36 (Insurance & Financial) and Class 35 (Advertising & Business), among 20 Nice Classification classes represented.
Showing of trademarks Trademarks
Practice Areas by Trademark Class
William Zac Duffy's trademark practice covers 20 Nice Classification classes, representing the range of industries and goods/services handled in their USPTO filings.
Insurance; financial affairs; monetary affairs; real estate affairs
Advertising; business management; business administration; office functions
Scientific and technological services; industrial analysis and research services
Bleaching preparations and other substances for laundry use; cleaning, polishing, scouring
Medical services; veterinary services; hygienic and beauty care for human beings or animals
Education; providing of training; entertainment; sporting and cultural activities
Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying
Scientific, nautical, surveying, photographic, cinematographic, optical apparatus and instruments
Frequently Asked Questions
How many trademark applications has William Zac Duffy filed?
William Zac Duffy has filed 661 trademark applications with the United States Patent and Trademark Office (USPTO). Of these, 416 registered, 133 pending, 84 abandoned, 28 cancelled.
What trademark classes does William Zac Duffy specialize in?
William Zac Duffy has filed trademarks across 20 Nice Classification classes. The most common practice areas include Class 36 (Insurance & Financial), Class 35 (Advertising & Business), Class 42 (Computer & Scientific), Class 3 (Cosmetics & Cleaning), Class 44 (Medical Services). Class 36 covers insurance; financial affairs; monetary affairs; real estate affairs.
How long has William Zac Duffy been filing trademarks?
William Zac Duffy's trademark filing history with the USPTO spans from 1913 to 2026, covering 113 years of trademark practice. During this period, William Zac Duffy has handled 661 trademark applications.
What is William Zac Duffy's trademark registration success rate?
William Zac Duffy has a 79% trademark registration rate, with 416 out of 528 resolved applications resulting in successful registration. Currently, 133 applications are pending review.