Issue-specific uniqueness---roughly 3000 lawsuits is well below the threshold for patent flood.
Connors ‘9 [John; July 2009; Patent attorney and founder of Connors & Associates, a professional law corporation, emeritus member of the Association of Corporate Patent Counsel; Orange County Lawyer, “Spotlight on Intellectual Property Law: The Patent Reform Humbug,” vol. 51]
The federal courts recognize that "invalid" patents exist, and dispose of these based on the evidence--quickly sometimes by summary judgment if there is no material fact in dispute. If a patent owner knowingly attempts to enforce an invalid patent, the court will impose penalties. The courts, however, do not recognize "bad" patents, which are creations of lobbyists. Since only about 3000 patent lawsuits are filed annually (only a couple hundred or so going to trial each year), there isn't any "torrent" of patent litigation clogging the federal courts. In fact, the federal courts are constantly modifying our patent system so that it is fair to all litigants as several recent cases attest, including the 2007 Supreme Court decision making the non-obvious test more difficult to pass. (KSR International vs. Teleflex 550 U. S. 398.)