The first mystery patent unseals on Wednesday, July 22, 2026.
One drawing from the archives, every day. Six guesses to name the invention.
United States Patent Office
Case status: FILE NOT RECEIVED
Misfiled
Today’s filing did not arrive.
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The Archive
Every past filing, kept under seal until you play it.
How to Play
The rules of practice before this office.
PatentGuessr is a free daily patent guessing game. Each day shows one real US patent drawing with the title, number and labels removed. You get six guesses to name the invention.
Each wrong guess reveals a clue from the patent: when and where it was filed, its size, its class, a line from the claim, then part of the title.
A guess that is right but too general is marked TOO BROAD and still uses a turn. Name the specific invention.
Typos and other names for the same invention are accepted.
Tap the drawing to enlarge it.
A new puzzle appears at midnight your time, and past days stay playable in the archive. You can share your result without giving away the answer.