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Motorola v. ASC — Fifth Circuit reversed an order granting U.S. discovery for European patent cases

Reported / Citable

Case
Motorola Mobility, L.L.C.; Motorola Mobility International Sales, L.L.C.; Lenovo (Deutschland) GMBH; Motorola Mobility Germany GMBH v. Advanced Standard Communication, L.L.C.
Court
U.S. Court of Appeals for the Fifth Circuit
Judge
Jones; Southwick; Duncan
Date Decided
October 29, 2026
Docket No.
26-10747
Topics
Section 1782 Discovery; Foreign Litigation; Patent Licensing; Magistrate Judges
Source
Read the full opinion

Background

Advanced Standard Communication, L.L.C. acquired telecommunications patents from ZTE Corporation and later sued Motorola entities in the European Union’s Unified Patent Court and a German court, alleging infringement of patents covering technology used in 5G-capable devices. Motorola denied infringement and alternatively asserted that ASC had to license the patents on fair, reasonable, and non-discriminatory terms.

Motorola sought ASC’s unredacted patent purchase agreement with ZTE, including its exhibits, to support its FRAND defense. While a request for that material was pending before the UPC, Motorola applied in the Northern District of Texas for discovery under 28 U.S.C. § 1782. The UPC subsequently denied production as insufficiently substantiated and premature, while leaving open the possibility of discovery later. A federal magistrate judge nevertheless ordered production, and the district court upheld that order under the clear-error standard applicable to nondispositive matters.

The Court’s Holding

The Fifth Circuit reversed. It first held that a § 1782 proceeding is a stand-alone case in which discovery is the ultimate relief, making the application the functional equivalent of a dispositive motion. A magistrate judge therefore may issue only a recommendation, and a district court must conduct de novo review of properly raised objections under Rule 72(b), rather than clear-error review under Rule 72(a).

The court also held that the district court abused its discretion in weighing the factors identified in Intel Corp. v. Advanced Micro Devices, Inc. The district court improperly required ASC to provide “authoritative proof” that the European courts would reject the requested discovery. Considering the record without that error, the Fifth Circuit concluded that the UPC’s denial and the likelihood that German courts would reach the same result showed the request was premature. Granting discovery at that stage also risked circumventing the UPC’s ruling and undermining comity, even though producing the agreement would not itself be unduly burdensome or intrusive.

Key Takeaways

  • A § 1782 application is dispositive for purposes of magistrate-judge authority, so properly raised objections require de novo district-court review.
  • A § 1782 respondent need not furnish “authoritative proof” that a foreign tribunal would reject the requested material to establish lack of receptivity under the Intel analysis.
  • Although § 1782 does not require that evidence be discoverable abroad, a foreign tribunal’s determination that discovery is unnecessary or premature may weigh strongly against U.S. assistance.

Why It Matters

The decision clarifies both the procedure and substance governing § 1782 applications in the Fifth Circuit. District judges cannot defer to magistrate judges on the ultimate disposition of these stand-alone discovery proceedings, and they must assess foreign receptivity from the full record rather than place a categorical burden on respondents.

The ruling also cautions litigants against using § 1782 to obtain evidence that a foreign court has already declined to order at the current stage of litigation. Motorola may renew its request if circumstances materially change, but the Fifth Circuit held that U.S. discovery was inappropriate at this time.

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