submarine patent
n.— «Occasionally, patents take a decade or two to be granted because they are held up in appeals and amendments in the Patent Office. When this happens under the existing system, an inventor can obtain a 17-year monopoly on an invention made long ago and demand payments from companies that have long been using the technology on the assumption that it was not protected by patents. Because these patents remain hidden for a long time and suddenly surface, they have been called “submarine patents.”» —“U.S. Agress to Alter Patents’ Period of Coverage” by Andrew Pollack in Tokyo New York Times Jan. 24, 1994. (source: Double-Tongued Dictionary)
Further reading
Advice about college essays from the winner of a top prize for children’s literature: Kelly Barnhill encourages teens to write about experiences that are uniquely their own, from a point of view that is theirs and no one else’s. Plus, why do we say...
While compiling the Oxford English Dictionary, lexicographer James Murray exchanged hundreds of letters a week with authors, advisors, and volunteer researchers. A new collection online lets you eavesdrop on discussions about which words should be...