Hytera Communications Corporation Ltd v Motorola Solutions Inc

This appeal came out of a major fight between two competitors in the digital mobile radio market. Motorola had developed DMR products using TDMA technology and had both patent rights and Australian copyright in software used in those products. Hytera was trying to develop a competing DMR product, but by the end of 2007 its project was, in the Court's summary, in disarray. Motorola was already in market, while Hytera faced delay and concerns that its product would not be commercially competitive.

The factual turning point was Hytera's recruitment of Mr GS Kok, a senior Motorola employee involved in the Matrix project, followed by the recruitment of 12 more Motorola engineers. Hytera did not dispute at trial that Mr Kok and certain other former Motorola engineers brought Motorola documents and computer code to Hytera without authorisation and used some of that material in developing Hytera's firmware. The primary judge made even stronger findings, including that all of Motorola's DMR source code had been taken as a resource for writing Hytera's source code. The Full Court's introduction records those findings and the primary judge's description of industrial scale harvesting of Motorola's source code.

Hytera brought its DMR devices to market in March 2010. The primary judge found that Hytera gained a commercial advantage in two ways: it got to market with a competitive product where otherwise it would not have done so, and it got there at least 15 months earlier than otherwise. From September 2013, Hytera began distributing its DMRs in Australia. That Australian supply became central to the patent and copyright claims.

Motorola commenced Australian proceedings in July 2017 alleging infringement of three Australian patents. After Hytera's source code was discovered in the patent proceeding, Motorola added copyright claims in December 2018. The case then became a broad IP dispute involving patented radio methods, source code, firmware, imported devices and download availability in Australia.

The appeal covered both patents and copyright. On the patent side, Motorola had sued over three Australian patents relating to methods that refine the efficiency of TDMA in DMR systems. The Full Court's extract records that the primary judge found Hytera had infringed claims of the 355 patent before 20 November 2019, found no infringement of the 764 patent, and found the 960 patent invalid. Hytera appealed the adverse patent findings, while Motorola cross-appealed the invalidity finding on the 960 patent.

On the copyright side, Motorola alleged infringement of Australian copyright in 11 computer programs in source code. The alleged infringing conduct was indirect infringement by importing into Australia DMR devices containing firmware in object code, where the firmware had been compiled from Hytera source code developed using Motorola's source code, and by making that firmware available for download in Australia from a website portal. The appeal therefore raised questions about substantial part, originality, adaptation, corporate knowledge and additional damages.

The trial had been split into two stages because of the scale and complexity of the issues. Patent issues were heard in 2019 and copyright issues in 2020. The primary judge delivered judgment in December 2022, granting declaratory and injunctive relief, deferring compensatory relief, and finding that Motorola was entitled to additional damages for copyright infringement but not for patent infringement. Hytera then appealed the findings made against it, and Motorola cross-appealed on the 960 patent and on the scope of the copyright findings.

For business readers, the important point is that one product can trigger overlapping claims at the same time. A device with embedded firmware may raise patent issues about how it works, copyright issues about the code used to make it work, and evidence issues about how the code was developed and preserved.

On the patent side, the Full Court had to deal with disputed construction, infringement and validity issues. The catchwords and introductory sections show that the appeal involved arguments about inventive step, utility and manner of manufacture, as well as whether Hytera had indirectly infringed the 355 patent by supplying DMR devices in Australia. Motorola's cross-appeal on the 960 patent challenged the finding that the invention claimed did not involve an inventive step, but that challenge was ultimately rejected.

On the copyright side, the central issue was whether the primary judge had used the correct approach to deciding whether Hytera copied a substantial part of Motorola's source code works. The Full Court framed a series of questions, including whether the primary judge had looked too narrowly at small segments of copied source code instead of considering the significance of the copied material as a whole for each Motorola work, and whether the analysis had focused too heavily on functionality rather than originality.

The Court also had to consider whether copied parts lost protection because they derived from earlier versions of Motorola's software, whether object code library files were an adaptation of a substantial part of the Motorola works, whether knowledge of copying could be attributed to the Hytera companies for the purposes of sections 37 and 38 of the Copyright Act, and whether the award of additional damages should be disturbed. The Full Court said no error was shown in the attribution of knowledge to the corporation or in the exercise of discretion on additional damages.

Another important feature was the Court's treatment of evidence. The catchwords record that Hytera had deliberately deleted source code to suppress evidence that might assist in a copyright infringement suit, and that the Court considered the principle omnia praesumuntur contra spoliatorem, meaning all things are presumed against the wrongdoer. That does not mean every deletion proves infringement, but it does show how seriously courts treat evidence destruction in technical disputes.

The Full Court dismissed Hytera's amended notice of appeal. In practical terms, Hytera failed in its challenge to the findings made against it on the 355 patent, on copyright infringement grounds advanced by it, and on the award of additional damages for copyright infringement. The Court also rejected Motorola's challenge to the invalidity finding on the 960 patent, so that patent remained invalid on the appeal outcome.

But the copyright side did not end with a final win or loss on every point. The Court allowed Motorola's cross-appeal in part, specifically on grounds 2 and 3, and otherwise dismissed it. The Court held that the primary judge's approach to assessing whether a substantial part had been copied was shown to be in error. Even so, the Full Court said it could not finally determine whether Motorola's copyright claim should succeed in whole or in part because the necessary factual findings had not been made using the methodology the Court considered correct.

As a result, the Court ordered a further hearing process for the copyright infringement claims arising on the appeal. The matter was listed for case management on 7 February 2025 for timetabling orders for that further hearing. This is a key point for anyone relying on the case. The appeal outcome is important, but the copyright aspect was still continuing and was not fully resolved by the December 2024 orders.

The Court also made confidentiality and redaction orders. Access to the unredacted reasons was restricted to legal representatives and persons allowed under agreed confidentiality regimes. The parties were directed to exchange proposed redactions and work toward a version suitable for publication. That means the public reasons available immediately after judgment did not necessarily contain the full factual detail, and later public material may provide a more complete record.

The first practical lesson is about staff moves. Hiring from a competitor can be commercially sensible and lawful, but it becomes dangerous if new hires bring documents, code or technical materials from their former employer and those materials influence product development. The Court's summary shows how recruitment decisions can become the factual engine of a major IP case. If your business is trying to catch up quickly to a competitor, that is exactly when governance needs to be strongest.

The second lesson is about software provenance. If your product includes source code, firmware, libraries or downloadable updates, you need to know where that material came from and be able to prove it. Courts will look beyond labels and ask whether development was genuinely independent, whether copied material was used as a resource, and whether the copied material was substantial when considered properly.

The third lesson is that importation and Australian supply matter. The copyright case was framed around importing devices into Australia containing firmware in object code and making firmware available for download in Australia. The patent case also concerned distribution in Australia. So local subsidiaries, importers and distributors cannot assume that IP risk sits only with the overseas parent or manufacturer. If your Australian business supplies the product here, you need an IP clearance process that covers both patents and software.

The fourth lesson is evidence discipline. The Court's reference to deliberate deletion of source code is a warning sign for any business handling technical records. Once a dispute is reasonably in prospect, ordinary deletion practices can become dangerous. Preserve repositories, emails, build records, firmware versions, download logs and device images. A weak evidence trail can make a difficult case much worse.

The Full Court delivered judgment and orders on 18 December 2024. It dismissed Hytera's appeal and allowed Motorola's cross-appeal in part. It also ordered that the copyright issues arising on the appeal continue to a further hearing process, with case management listed for 7 February 2025. That means the copyright aspect was still live after the appeal judgment.

The Court also imposed confidentiality restrictions over the unredacted reasons and set a timetable for the parties to identify and negotiate redactions. Because of those orders, the public record may develop over time as a redacted version suitable for publication is settled or as later orders are made. Anyone relying on the case for a current legal position should check whether there have been later public reasons or orders dealing with the further copyright hearing.

This page is based on the Federal Court of Australia Full Court judgment for Hytera Communications Corporation Ltd v Motorola Solutions Inc [2024] FCAFC 168. The extract includes the catchwords, introductory factual summary, procedural history, orders and the structure of the reasons.

The extract itself makes clear that some reasons were subject to confidentiality restrictions and a redaction process, and that the Court had not finally determined all copyright issues because further factual findings were required. Those features are important to understanding both the limits of the current public record and the ongoing status of the copyright dispute.