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Trademark Attorney / Law Firm

Thomas W. Leffert – Trademark Portfolio

Thomas W. Leffert specializes in Class 1 (Chemicals) trademark filings before the United States Patent and Trademark Office (USPTO), with 13 of 20 total filings concentrated in this category. The practice also covers Class 5 (Pharmaceuticals) along with 5 other Nice Classification classes. Filing activity spans from 1988 to 2025. Currently, 13 trademarks are registered and 1 is pending.

20 Total Trademarks
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All (20) Registered (13) Pending (1) Abandoned (1) Cancelled (5)
All Years 2025 2019 2011 1999 1988
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