Momenta Pharmaceuticals, Inc. (MNTA)

[iwfal]

Unless the USSC decides to disagree with Jefferson’s well-known sentiment—“Society may give an exclusive right to the profits arising from them, as an encouragement to men to pursue ideas”—they’re going to uphold patent rights.

FWIW I would suggest that what you are missing is that it is human nature to look at inventions made by others and say 'that's obvious' (and therefore clearly not worthy of protection) - a classic example is the concept of zero. And another is the concept of sound=vibration. And yet they are both reasonably recent discoveries.