Yet another bill aimed at limiting patent troll litigation has been introduced in Congress. The Patent Litigation and Innovation Act, H.R. 2639, introduced by Reps. Hakeem Jeffries, D-N.Y., and Blake Farenthold, R-Texas, would strengthen pleading requirements for patent suits by requiring patent plaintiffs to identify specific products that allegedly infringe and provide "detailed specificity" as to how the asserted claims correspond to the products.

The bill is also aimed at limiting discovery costs for defendants by requiring a court to stay discovery in any patent suit until it has ruled on a motion to dismiss or transfer and/or has issued a claim construction ruling.

Another feature of the bill would require courts to stay infringement suits against third-party purchasers of an allegedly infringing product pending the outcome of a suit against the manufacturer of the product.

Finally, in an effort to up the ante for frivolous patent litigation, the bill would require courts to conduct a review after final adjudication of whether any conduct during the litigation merits sanctions, such as bringing the suit to harass or needlessly increasing the cost of litigation.