By Jonah Gelbach, a senior research fellow at the Yale Department of Economics Program in Applied Economics and Policy and a Yale Law School student.

The Supreme Court’s 2007 and 2009 opinions in Bell Atlantic v. Twombly and Ashcroft v. Iqbal upended Conley v. Gibson’s famous rule that a complaint attacked by a Rule 12(b)(6) motion to dismiss for failure to state a claim should be dismissed only if there is no set of facts under which the complaint’s claims could entitle the plaintiff to relief. Instead, Twombly and Iqbal require a plaintiff’s complaint to include allegations making entitlement to relief not just logically possible, but plausible.
Critics have attacked Twombly and Iqbal for both raising pleading standards and injecting subjectivity into Rule 12(b)(6) adjudication. Kevin Clermont and Stephen Yeazell characterize the post-Iqbal situation as “Pleading Left Bleeding.” Civil rights and employment discrimination cases have raised special concern. Their plaintiffs might be especially unable to meet elevated pleading standards without discovery, setting up a need-discovery-to-get-to-discovery Catch-22. Joshua Civin & Debo P. Adegbile wrote in an ACS issue brief that Twombly and Iqbal might “create an undesirable safe harbor that effectively places some defendants beyond the reach of civil rights laws.”
Not everyone is disappointed, to be sure. For example, attorneys Mark Herrmann and James Beck have written that “out-of-control litigation prompted the Supreme Court in Twombly to adjust the threshold pleading requirements for unleashing the legal process.”
Normative questions aside, some observers cite a report the Federal Judicial Center (FJC) issued in March 2011 for the proposition that Twombly and Iqbal haven’t actually affected much. The report found that “there was no increase in the rate of grants of motions to dismiss without leave to amend,” including among civil rights and employment discrimination cases.
But the FJC report also found that the share of filed lawsuits that face a Rule 12(b)(6) motion to dismiss increased substantially after Twombly and Iqbal — more than 50 percent -- depending on the type of lawsuit involved. In my paper, “Locking the Doors to Discovery?,” forthcoming as a student Note in volume 121 of the Yale Law Journal, I argue that the increase in the proportion of Rule 12(b)(6) filings is evidence of a “defendant selection effect.” Defendants who are more confident of victory at the 12(b)(6) stage will file motions to dismiss against cases that are more strongly pleaded and that the defendants would have answered before Twombly/Iqbal. Clermont and Yeazell express this point colorfully, writing that a defense attorney “commits legal malpractice if he or she fails to move to dismiss with liberal citations to Twombly and Iqbal.”
Thus, defendant selection should increase the average quality of complaints that face Rule 12(b)(6) motions to dismiss after Twombly/Iqbal. Given that there was little change in the rate at which these motions to dismiss were granted, the result is that the FJC report is actually powerful evidence in favor of the contention that Twombly and Iqbal have had a substantial impact. If defendants file motions to dismiss against a stronger set of complaints but win just as often, then judges must be dismissing complaints that they would not have dismissed before. The end result is that more cases fail to reach discovery than would have before Twombly and Iqbal.
In my paper, I use an economic model to try to quantify the impact that Twombly and Iqbal have had in preventing claims from reaching discovery.

level, slashed state court budgets have become a serious concern, resulting in significant staff resource cuts, reduced operating hours, increased fees and cases delayed for as long as ten years. “[M]any court advocates bristle that the third branch of government is being treated as nothing more than a state agency begging for scraps,” the article notes.
The Supreme Court in a decision issued earlier this month may have blocked one route for stockholders to challenge corporate fraud, but in doing so, may have “
ims are based on information secured from a Freedom of Information Act (FOIA) request. The FCA precludes whistleblowers from basing claims on government "reports" and in Schindler, the Court had to decide whether the Government’s response to a FOIA request constituted a government report. Justice Thomas opined that because a response to a FOIA request provides information, it must therefore be a "report" within the meaning of the statute. While this may be good news for college students seeking support for the proposition that a one page document suffices as a term paper or report, it is indeed a blow to whistleblowers seeking redress from private contractors that cheat the government.