専売特許
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Meanings
1
dated term
Dated term for patent; modern Japanese normally uses 特許. Still understood but feels old-fashioned.
See also: 特許
A patent was granted for this invention.
The patent expired.
2
one's specialty; party piece; signature move
Colloquial use; refers to something a person is particularly good at or known for, often in a playful or boastful way.
His specialty is always being late to every meeting.
This dish is my signature creation.