THE LOST LIBRARY holds 1 USPTO trademark filings across 0 NICE classes. The largest concentration is in Class 41 (Education & Entertainment) with 1 filings. The WikiTrademarks Expansion Score is 4/100, low — the brand is focused on defending its existing categories rather than expanding.
USPTO data refreshed August 6, 2026
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Filing Velocity (24 Months)
Filing Activity by NICE Class
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Recent Filings
| Serial No. | Mark | Filing Date | Status | Classes | Owner |
|---|---|---|---|---|---|
| 99486244 | THE LOST LIBRARY | Nov 08, 2025 | Registered | 041 Education & Entertainment | Half Price Books, Records, Magazines, Incorporated |
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FAQ: THE LOST LIBRARY trademark portfolio
What trademarks does THE LOST LIBRARY hold?
THE LOST LIBRARY holds 1 USPTO trademark filings across 0 NICE classes. The largest concentration is in Class 41 (Education & Entertainment). The most recent filings are registered to Half Price Books, Records, Magazines, Incorporated.
How many trademarks does THE LOST LIBRARY have at the USPTO?
WikiTrademarks tracks 1 USPTO trademark filings attributed to THE LOST LIBRARY. The brand has been actively filing since November 2025. The count updates daily as new filings are indexed from the USPTO bulk data feed.
In which NICE classes does THE LOST LIBRARY file most often?
THE LOST LIBRARY's most active class is NICE Class 41 (Education & Entertainment), with 1 filings. The full distribution across all 0 classes is shown in the Nice Class Distribution panel on this page.
Who owns the THE LOST LIBRARY trademark?
The most recent filings under the THE LOST LIBRARY mark are registered to Half Price Books, Records, Magazines, Incorporated. Trademark ownership can shift through assignments — see the Ownership & Assignment History section on this page for the full chain of title.
Is THE LOST LIBRARY expanding into new categories?
The current WikiTrademarks Expansion Score for THE LOST LIBRARY is 4 out of 100, which is low — the brand is focused on defending its existing categories rather than expanding. The score combines NICE class breadth, filing velocity, and the rate of cross-class movement from the brand's filing history.
How can I track new THE LOST LIBRARY trademark filings?
Click the Watch Brand button at the top of this page to add THE LOST LIBRARY to your Watchlist. New filings show up on your WikiTrademarks dashboard within 24 to 48 hours of being public, alongside any class expansions, status changes, or assignment events.
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