ON PETITION

ORDER

Petitioners Amazon.com Inc., Amazon Services LLC, and Amazon Web Services LLC (“Amazon”) seek a writ of mandamus to direct the United States District Court for the Eastern District of Texas to vacate its order denying Amazon’s motion to transfer venue, and to transfer the case to the United States District Court for the Western District of Texas. Global Sessions LP and Global Sessions Holding SRL (“Global Sessions”) oppose. Amazon replies.

Global Sessions filed this patent infringement suit against Amazon, Syste-max, Inc., Circuitcity.com, Inc., Compu-sa.com, Inc., Profitcenter Software Inc., and Tigerdirect, Inc., Orbitz Worldwide, LLC, Orbitz, Inc., Orbitz, LLC, Trip Network, Inc. (d/b/a CheapTickets), Price-line.com, Inc., Sabre Holdings Corporation, Sabre Inc., Travelocity.com L.P., Travelocity.com, Inc., CDW Corporation, and CDW LLC. *

In its order denying Amazon’s motion to transfer, the district court noted that none of the defendants are headquartered in the Western District of Texas and that the *670 defendants’ documents and evidence are physically located throughout the nation. Although the court noted that some likely sources of proof are located at Global Sessions’ principal place of business in Austin, Texas, the court explained that the patent prosecution documents are likely located in Dallas, Texas and other defendants’ documents are likely located in Tulsa, Oklahoma and Southlake, Texas, which are all closer to the Eastern District of Texas.

The district court also recognized that the Western District of Texas court’s ability to subpoena potential witnesses favored transfer because the parties had identified a number of material third-party witnesses who resided in the Western District or within 100 miles of that court. However, because at least four witnesses with knowledge about the valuation, acquisition, and assignment of the patents worked within 100 miles of the Eastern District of Texas court, the court noted that it would have absolute subpoena power over those witnesses. The court further noted that although transfer would make it more convenient for the witnesses identified in the Western District, transfer would merely shift the inconvenience of travel for a number of witnesses who resided closer to the Eastern District. Ultimately, after considering all of the relevant factors, the district court concluded that Amazon had not met its burden of demonstrating that the Western District of Texas was clearly more convenient than the Eastern District of Texas for trial of the case, and denied the transfer motion.

Mandamus is an extraordinary remedy, available “to correct a clear abuse of discretion or usurpation of judicial power.” In re Nintendo Co., 589 F.3d 1194, 1197 (Fed.Cir. 2009). As the petition does not involve substantive issues of patent law, the law of the regional circuit applies, here the Fifth Circuit. Id.

Amazon relies on this court’s decision in In re Genentech, Inc., 566 F.3d 1338 (Fed.Cir. 2009), arguing that, as in this case, the district court in Genentech weighed against transfer the fact that sources of proof maintained outside the district were nonetheless closer to the Eastern District of Texas. In that case, the district court denied transfer to the Northern District of California, a venue where eight of the nine alleged infringing products had been developed, tested, and produced, and where a substantial number of sources of proof were located and witnesses resided, despite the fact that no parties or witnesses resided in the Eastern District of Texas. Id. at 1345. In denying transfer, the district court explained that some documents located abroad and on the East Coast would have to be transported over a shorter distance to the Eastern District of Texas than if they were to be transported to the transferee venue. Id. Because those documents would need to be transported a significant distance no matter where the case was tried, and it was patently erroneous to allow that basis to prevent transfer to the far more convenient venue, this court granted mandamus. See id. at 1348 (“[Tjhere is simply no rational argument that, in light of the witnesses, parties, evidence, compulsory attendance and local interest, the clearly more convenient venue is not the Northern District of California.”).

In this case, by contrast, no defendant is headquartered in the transferee venue. In that respect, this case differs significantly from Genentech because transfer here would not result in trial of the case where the alleged infringing products were developed and where a significant amount of the defendants’ sources of proof are maintained. Although the district court relied on the fact that some of the defendants’ likely documentary evidence is located in *671 Dallas, Texas, Southlake, Texas, and in Oklahoma, which are all outside, but closer to, the Eastern District of Texas, this court discerns no clear abuse of discretion in the district court’s finding that the relative ease of access to sources of proof does not favor transfer.

Amazon also argues that the handful of third-party witnesses Global Sessions identified as located in the Eastern District have only a speculative connection to the case. According to Amazon, the availability of compulsory process to secure attendance of non-party witnesses should therefore weigh “strongly” in favor of transfer, not “slightly” as the district court found. This type of asserted error is ordinarily not mandamus-worthy, particularly in light of the fact that at the transfer stage, affidavits or other detailed information about a witness’s relevance and potential testimony are not required. See In re Volkswagen of Am., Inc., 545 F.3d 304, 317 n. 12 (5th Cir. 2008) (en banc).

This court is also not persuaded by Amazon’s arguments regarding the district court’s severance and judicial economy analysis. It is true that if transfer were clearly appropriate, severance would not be required given it is undisputed the Western District of Texas has personal jurisdiction over all defendants. Nonetheless, because Amazon has not made a compelling showing that the Western District is a clearly more convenient venue, even discounting the district court’s concerns about severance, this court cannot say that the district court’s decision amounted to a clear abuse of discretion.

Accordingly,

It Is ORDERED That:

The petition for a writ of mandamus is denied.