Gatekeeper Solutions, Inc. v. Darktrace, Inc.

Background

Gatekeeper Solutions, Inc. brought a patent-infringement action against Darktrace, Inc. Gatekeeper, identified in the opinion as a New York corporation, owns a patent covering a system intended to prevent an electronic communication from being sent to conflicting recipients. Gatekeeper alleged that Darktrace’s email product infringed that patent.

Darktrace asked the court to transfer the case under 28 U.S.C. § 1404(a) to the Northern District of California. Darktrace stated that its main office was in San Francisco, that its former small office in Plano, Texas, had closed, and that it no longer had a physical presence in the Eastern District of Texas. Darktrace also presented uncontested evidence that its likely witnesses worked in or near San Francisco, additional possible witnesses were based in Cambridge, United Kingdom, most accused-product customers were in the Northern District of California, and relevant documents were stored on servers in San Francisco and Cambridge. No relevant documents or likely witnesses were located in the Eastern District of Texas.

Legal standard

Section 1404(a) allows a federal court to transfer a civil action to another district where the case could properly have been brought when transfer would be more convenient for the parties and witnesses and would serve the interests of justice. The moving party must show that the proposed district is clearly more convenient than the plaintiff’s chosen district.

The court considered eight factors: access to evidence, the ability to require unwilling witnesses to attend, the cost of attendance for willing witnesses, other practical problems affecting trial, court congestion, local interests, familiarity with the governing law, and conflicts-of-law concerns.

Court’s analysis

The court first found that venue would have been proper in the Northern District of California because Darktrace’s principal office was there and Gatekeeper did not dispute that some alleged infringement occurred there.

Four factors favored transfer. First, access to sources of proof favored transfer because many relevant documents were located in the Northern District of California and none were in the Eastern District of Texas. The court rejected Gatekeeper’s argument that electronic documents made this factor neutral.

Second, the availability of compulsory process favored transfer. Darktrace identified potential unwilling witnesses among its customers and former employees, and nearly all were located in the Northern District of California. Third, the cost of attendance for willing witnesses favored transfer because all of Darktrace’s expected witnesses worked and lived in the Northern District of California, more than 1,700 miles from the Eastern District of Texas. Gatekeeper did not identify its own witnesses or contend that the Eastern District of Texas was more convenient for any expected witness.

The fourth private-interest factor, concerning other practical problems affecting an easy and inexpensive trial, was neutral. The case had been stayed pending an ex parte reexamination since April 2025 and remained at an early stage, so the court had not developed substantial familiarity with the merits.

Among the public-interest factors, familiarity with the governing law and conflicts-of-law concerns were neutral. The court stated that both districts could decide patent-infringement disputes and that no conflict-of-law issue had been presented. Court congestion was also neutral because the available information about the relative speed of the two districts was inconclusive.

The local-interest factor favored transfer. The Northern District of California had connections to the alleged events through Darktrace’s witnesses, documents, and some alleged infringing acts. The court found no comparable connection to the Eastern District of Texas: neither party resided there, and Darktrace had closed its only office in that district.

Disposition

Judge not identified in the opinion granted Darktrace’s Motion to Transfer Venue under 28 U.S.C. § 1404(a). The court ordered that the case be transferred to the United States District Court for the Northern District of California.