In Re JUNIPER NETWORKS, INC., 14 F.4th 1313

Brazos (WSOU Investments LLC d/b/a Brazos Licensing) filed seven patent infringement suits in Waco, Western District of Texas; six remain and are treated collectively here.
Juniper (Delaware corp., HQ in Sunnyvale, CA) moved to transfer the cases to the Northern District of California under 28 U.S.C. § 1404(a), arguing the accused products were designed, developed, and supported from Sunnyvale and key witnesses and source code are there.
Juniper identified 11 party witnesses and several prior-art witnesses in the Northern District of California; Brazos identified a small, recently established Waco office with two employees and one likely local witness.
The district court denied transfer, finding many factors neutral or slightly favoring retention (sources of proof, compulsory process, witness convenience, local interest, and court congestion).
The Federal Circuit granted mandamus, concluding the district court misapplied the § 1404(a) factors (especially witness convenience and local interest), vacated the denial, and directed transfer to the Northern District of California.

Issue	Plaintiff's Argument (Brazos)	Defendant's Argument (Juniper)	Held
Whether transfer under §1404(a) should be granted	Venue in WDTX is proper because Brazos is headquartered in Waco and Juniper has Texas presence	NDCA is clearly more convenient given locus of design, witnesses, and documents	Court abused discretion in denying transfer; ordered transfer to NDCA
Convenience of witnesses (most important factor)	Party witnesses can be compelled; prior-art witnesses unlikely to testify, so their locations warrant little weight	Majority of party and prior-art witnesses are in NDCA; travel and costs favor NDCA	District court erred in discounting party and prior-art witnesses; factor favors transfer
Local interest of the forums	WDTX has a local interest: Brazos headquartered in Waco and Juniper has Texas offices	Relevant events (research, design, development) occurred in NDCA; Brazos’s Waco presence is recent/ephemeral	Court erred by crediting general presence and recent Waco office; local interest favors NDCA
Sources of proof, compulsory process, and court congestion	Sources of proof are distributed; WDTX can reach trial sooner, so these factors support retention	Juniper’s sworn testimony shows majority of documentary evidence and source code at Sunnyvale; Brazos identified no unwilling witnesses in WDTX	District court undervalued Juniper’s evidence of sources of proof; compulsory process should be neutral-to-favor transfer; congestion not shown to favor WDTX

In re Volkswagen of Am., Inc., 545 F.3d 304 (5th Cir. 2008) (establishes the traditional private and public interest factors for §1404(a) transfer analysis)
In re Volkswagen AG, 371 F.3d 201 (5th Cir. 2004) (forum-non conveniens and transfer principles informing §1404(a) analysis)
In re Radmax, Ltd., 720 F.3d 285 (Fed. Cir. 2013) (movant must show transferee venue is clearly more convenient)
In re Genentech, Inc., 566 F.3d 1338 (Fed. Cir. 2009) (witness convenience is the single most important factor)
In re Samsung Elecs. Co., 2 F.4th 1371 (Fed. Cir. 2021) (district courts may not categorically discount party or prior-art witnesses; strong showing favors transfer when opposing showing is weak)
In re Apple Inc., 979 F.3d 1332 (Fed. Cir. 2020) (local interest requires a connection between the venue and events giving rise to the suit; general corporate presence is insufficient)
In re Microsoft Corp., 630 F.3d 1361 (Fed. Cir. 2011) (recent or ephemeral presence in a forum is entitled to little weight)
Acer Am. Corp. v. 626 F.3d 1252 (Fed. Cir. 2010) (local interest favors transferee when research, design, and development occurred there)
In re Toyota Motor Corp., 747 F.3d 1338 (Fed. Cir. 2014) (evidence stored outside the two forums does not weigh against transfer; focus is relative ease of access)
In re Hoffmann-La Roche Inc., 587 F.3d 1333 (Fed. Cir. 2009) (pre-litigation relocation of documents to manipulate venue is suspect)