submarine patent
n.— «A man fought with the Patent Office for 15 years while lots of different laser products were being developed. Eventually, makers of laser products were forced to pay him. “We call those “submarine patents,” Nickey said. “When he came to the surface, he made a lot of money.”» —“OSU Could Lose Out In World Of Patents” by James W. Crowley Dispatch (Columbus, Ohio) Dec. 12, 1993. (source: Double-Tongued Dictionary)
Further reading
While reading Great Expectations (Bookshop|Amazon) by Charles Dickens, a listener in Arlington, Texas, is surprised when one of the characters inherits some money, which Dickens describes as a cool four thousand. Were they really using cool that way...
An anadrome is a word that forms a whole new word when you spell it backwards. For example, the word “stressed” spelled backwards is “desserts.” Some people’s first names are anadromes. There’s the girl named Noel...