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Trademark Attorney / Law Firm

David O. Klein – Trademark Portfolio

With a filing history spanning 22 years (1989–2025), David O. Klein has represented clients in 320 trademark filings before the United States Patent and Trademark Office (USPTO). Over the course of this practice, 85 trademarks have achieved registered status, while 3 remain pending. Areas of expertise include Class 35 (Advertising & Business) and Class 41 (Education & Entertainment), among 20 Nice Classification classes represented.

320 Total Trademarks
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All (320) Registered (85) Pending (3) Abandoned (107) Cancelled (125)
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