The Supreme Court on Tuesday ruled that generic drug makers can file certain legal counterclaims against brand-drug companies in an effort to get their cheaper copycat medicines on the market. Our own Brent Kendall has a story on the ruling here.

The case hinged, more or less, on the meaning of “not an.” Justice Elena Kagan, who authored the opinion, labored over the phrase for several sentences and poked some fun at the Mets in the process: