12) Get ready to mass produce the patent just before the patent expires.
You probably aren't old enough to remember the Polaroid Swinger case.
The Polaroid Land camera was the first camera that gave you a print in 60 seconds. Big companies were all tooled up to jump on the tech the day the patent expired, so they could get a piece of the 60-second photo action.
The day before the patent expired, Polaroid released the "Swinger", (named for its wrist strap), which used a whole new film technology that they'd spent the previous 16 years and 364 days developing, and avoided a whole bunch of hassles that the previous one had. Nobody bought the old-tech units from any of the competitors, because the old Land camera technology became obsolete virtually overnight.
Cheers! Rich