HVDC Transmission for Telecom Infrastructure Patent Landscape
HVDC Transmission for Telecom Infrastructure Patent Landscape in 2026
The HVDC transmission for telecom infrastructure patent space is highly concentrated, with CET Power Luxembourg SA and Accion Systems Inc together accounting for the majority of activity in a corpus of 39 patent families. Annual filing volume has eased from its 2018 peak, signalling a maturing niche where a small number of specialists dominate and adjacent branches in control systems and telephonic communication remain relatively sparse.
CET Power Luxembourg leads a highly concentrated field
CET Power Luxembourg SA holds the top-ranked position with 17 patent families, nearly doubling the tally of the second-ranked Accion Systems Inc at 11 patent families. The remaining applicants each hold four or fewer families, underscoring the steep drop-off beyond the top two.
The top five filers account for 90% of the combined output of the hundred largest filers, which is an unusually high concentration ratio. This tier gap suggests the field is controlled by a few specialists rather than contested across a broad industry coalition.
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 1 | CET Power Luxembourg SA | 17 | |
| 2 | Accion Systems Inc | 11 | |
| 3 | AES Global Holdings Pte Ltd | 4 | |
| 4 | Delta Electronics (Shanghai) Co Ltd | 3 | |
| 5 | Huawei Digital Power Technology Co Ltd | 2 | |
| 6 | Infineon Technologies Austria AG | 1 | |
| 7 | FMC Kongsberg Subsea AS | 1 | |
| 8 | Grid Innovations LLC | 1 | |
| 9 | Licentia Patent-Verwaltungs GmbH | 1 |
CET Power Luxembourg’s dominance in power supply and grid systems (H02J) and Accion Systems’ parallel strength in power conversion (H02M) and electron tubes (H01J) imply that the leading positions are technically differentiated rather than overlapping, reducing the likelihood of near-term displacement without significant R&D investment.
The most recent filing years are subject to publication lag, so counts for 2024–2025 are likely under-represented and should not be interpreted as the definitive current activity level. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
A 2018 filing surge has given way to a lower steady state, with power conversion dominating the technology mix
The annual filing trend reveals a pronounced spike in 2018 followed by irregular, lower-volume activity, while the technology composition is anchored in two closely related power electronics classes. Together these charts identify both the pace of the field and the technical ground most heavily staked out.
Annual filing trend
Filings spiked to 12 families in 2018 and again reached 10 in 2020 before settling to single-digit annual volumes through 2022–2023. The 2024–2025 data are subject to publication lag and should be treated as provisional; they do not indicate the field has gone dormant.
↗ Hover for values · click a bar to ask EurekaTechnology composition
H02J (Power supply and grid systems) and H02M (Power conversion) are the two dominant branches, reflecting the core HVDC power delivery and conversion problem. H01J (Electron and discharge tubes) appears prominently due to Accion Systems’ ion-propulsion-adjacent conversion work. Telephonic communication (H04M) and control systems (G05B) are present but at noticeably lower counts, marking the adjacent application layer as relatively under-served.
↗ Hover for values · click a bar to ask EurekaHighly cited patent families surfaced by the query
Citation-heavy patent families returned by the query. Use this section as citation context, not as a curated list of the most topic-specific patents.
Safe and resilient energy distribution for a highl…
A microgrid with a high voltage direct current (HVDC), source, a high voltage alternating current (HVAC) source respectively, for efficiently and safely distributing power to decentralized loads, includes: at least a main or central HVDC, respective HVAC, power supply connectable in input to an AC grid and in output to a main DC, respective AC, distribution… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | System and method for power conversion | 10 |
| 2 | Safe and resilient energy distribution for a highl… | 6 |
| 3 | Virtualization of power for data centers, telecom … | 6 |
| 4 | System and method for power conversion | 6 |
| 5 | Data center with backup power system | 5 |
| 6 | System and method for power conversion | 4 |
| 7 | System and method for power conversion | 4 |
| 8 | Intelligent routing of electric power | 4 |
Ranked by total forward citations. Citation counts favour older and broadly cited patent families, and broad or adjacent patents may appear when they match the search scope. Treat this section as citation context, not as a curated list of the most topic-specific patents. Some patent titles may be shown in their original, non-English language where an accurate translation could not be guaranteed.
What the patent structure means for R&D investment decisions
The combination of high concentration, a post-peak filing trajectory, a US-centric jurisdiction footprint, and sparse adjacent branches shapes the risk-reward profile for new entrants and incumbents alike.
Post-peak field with annual volume easing from 2018 high
The lifecycle stage is classified as Decline, driven by annual filings easing back from the 2018 peak of 12 families. The field is not absent of activity — 2022 and 2023 each recorded positive counts — but the multi-year growth rate is negative at -33%. R&D teams entering now face an established prior-art landscape rather than an open frontier, and freedom-to-operate analysis around the top applicants’ H02J and H02M portfolios is advisable.
Post-peak · Decline stageTwo specialists hold the field; the remainder are marginal
CET Power Luxembourg SA (17 patent families) and Accion Systems Inc (11 patent families) together represent the overwhelming majority of substantive filing activity. AES Global Holdings, Delta Electronics (Shanghai), and Huawei Digital Power each hold four or fewer families, forming a distant second tier. This gap means any new entrant seeking competitive parity with the leaders would need to mount a sustained multi-year filing programme in core H02J and H02M subclasses.
High concentration · top-2 dominantNo co-applicant activity detected in this corpus
The collaboration evidence shows no co-filed patent families among applicants in this topic. All identified filers appear to have pursued their portfolios independently. This absence of cross-company co-development suggests the field has not yet attracted the consortium or standards-body dynamics sometimes seen in adjacent power electronics domains. Monitoring for future alliance formations — particularly between power conversion specialists and telecom infrastructure operators — may be worthwhile.
No co-filing detectedUS-centric filing with limited European and PCT coverage
The United States is the leading jurisdiction, followed by the European Patent Office, Germany, and WIPO PCT filings. Canada, Austria, Spain, Norway, and Sweden each register minimal presence. The US dominance reflects both the primary markets of the leading applicants and the jurisdictional strategy of Accion Systems. Competitors seeking broader geographic protection in European or Asian telecom markets would find the existing patent barrier comparatively low outside the US.
US-led · limited PCT coverageGo beyond the landscape: Eureka’s TRIZ Solution agent breaks down an R&D problem and returns patented concept solutions, each with a technical approach and cited patent & literature evidence.
Co-filing pairs, ranked by the number of jointly-filed patent families.
CET Power Luxembourg anchors grid-systems IP; Accion Systems leads in power conversion
The two leading applicants occupy distinct technical niches within the HVDC telecom space, reducing direct head-to-head overlap and making each difficult to challenge without targeted R&D in their respective subclasses.
CET Power Luxembourg SA
CET Power Luxembourg SA holds 17 patent families, the largest portfolio in the corpus. Its technical focus is concentrated in H02J subclasses covering power supply, grid interconnection, and backup power systems (H02J3, H02J9, H02J1). The applicant’s momentum data is not listed among recent new entrants, indicating an established rather than rapidly accelerating filing posture. Its breadth across multiple H02J subclasses gives it broad claim coverage across the grid-interface layer of HVDC telecom systems.
families: 17Accion Systems Inc
Accion Systems Inc holds 11 patent families and is flagged as a new entrant in momentum data, with 3 recent families, suggesting its portfolio has been built recently from a small or zero prior base. Its technical emphasis spans H01J27 (electron and discharge tubes), H02M1, and H02M3 (power conversion topologies), which is a technically differentiated position from CET Power Luxembourg’s grid-systems focus. This convergence of ion-physics and power-conversion expertise may reflect application in compact, high-efficiency DC power supplies for distributed telecom nodes.
families: 11| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| Accion Systems Inc | 3 | ▲ new entrant |
| AES Global Holdings Pte Ltd | 2 | ▲ new entrant |
| Delta Electronics (Shanghai) Co Ltd | 3 | ▲ new entrant |
| Huawei Digital Power Technology Co Ltd | 2 | ▲ new entrant |
Under-served branches in control systems and telephonic communication
Several IPC branches appear at noticeably lower counts relative to the dominant H02J and H02M classes. These observations reflect relative sparsity within the corpus and may warrant closer technical assessment before being treated as actionable entry points.
H04M · Telephonic Communication
H04M is the most directly application-aligned adjacent branch, with only 6 patent records in the corpus compared to 23 for H02J. Given that HVDC transmission for telecom is explicitly an application domain, the low H04M count suggests that the integration layer — where DC power interfaces with telephonic signalling, switching, and network equipment — is relatively sparsely patented. Engineers working on end-to-end power delivery specifications for central-office or edge-node telephony infrastructure may find fewer blocking patents here. An entry path could involve claiming novel power distribution architectures that are described in terms of telephonic network topology rather than pure power conversion.
Search this in Eureka →G05B · Control & Regulating Systems
G05B appears with only 5 patent records, indicating that automated control and regulation of HVDC telecom power systems is lightly covered relative to the hardware conversion layer. As telecom operators push toward software-defined power management and autonomous load balancing, control-system IP becomes strategically relevant. The sparse count here may reflect an early-stage gap between power electronics hardware innovation and the intelligent control overlay. Entrants with expertise in real-time embedded control or digital twin approaches to DC bus regulation may find this subspace accessible, though freedom-to-operate checks against the broader G05B corpus outside this topic are still warranted.
Search this in Eureka →How leaders differ by technology route across H02J, H02M, and adjacent classes
Strength of each leader across the main technology routes.
| Player | H02J 3 · Power supply & grid systems | H02M 3 · Power conversion (AC/DC etc.) | H02M 1 · Power conversion (AC/DC etc.) | H02J 9 · Power supply & grid systems | H01J 27 · Electron & discharge tubes |
|---|---|---|---|---|---|
| Accion Systems Inc | Absent | Strong · 11 | Strong · 11 | Absent | Strong · 11 |
| CET Power Luxembourg SA | Strong · 17 | Absent | Absent | Strong · 14 | Absent |
| AES Global Holdings Pte Ltd | Absent | Strong · 4 | Strong · 4 | Absent | Absent |
| Delta Electronics (Shanghai) Co Ltd | Absent | Strong · 3 | Moderate · 1 | Absent | Absent |
| Huawei Digital Power Technology Co Ltd | Absent | Strong · 2 | Absent | Absent | Absent |
| Infineon Technologies Austria AG | Absent | Strong · 1 | Strong · 1 | Absent | Absent |
Frequently asked questions
The corpus contains 39 patent families in scope for this topic.
CET Power Luxembourg SA is the top-ranked applicant with 17 patent families, followed by Accion Systems Inc with 11 patent families.
No. The lifecycle stage is classified as Decline. Annual filings peaked in 2018 at 12 families and have eased since. The most recent years carry publication lag and should be treated as provisional, but the multi-year growth rate is negative at -33%.
The United States is the leading jurisdiction, followed by the European Patent Office, Germany, and WIPO PCT. Canada, Austria, Spain, Norway, and Sweden each have minimal coverage, indicating limited patent barriers outside the US.
Yes. H04M (Telephonic communication) and G05B (Control and regulating systems) are present but have noticeably fewer patent records than the dominant H02J and H02M classes, making them relatively sparse within this corpus. H04M is particularly notable given its direct relevance to the telecom application layer.
No co-applicant activity has been detected in this corpus. All applicants appear to have filed independently, which is atypical compared to adjacent power electronics standards domains and may reflect the niche and specialized nature of the technology at this stage.
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Disclaimer. This page is generated from PatSnap Eureka data drawn from a limited snapshot of global patent and scientific-literature records, and is provided for general information and reference only.
Patent data carries inherent limitations: recent filings (typically the most recent 18–24 months) are under-counted due to standard publication lag; counts may be reported at either a patent-family or a patent-record basis and are not always directly comparable; classification, applicant-name, and citation data may contain errors, duplicates, or omissions; and the underlying search query defines and constrains the scope shown. As a result, the analysis may be incomplete or inaccurate and may not reflect the full technology landscape.
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