Solid-State Transformer for Telecom Infrastructure Patent Landscape
Solid-State Transformer for Telecom Infrastructure Patent Landscape in 2026
The solid-state transformer for telecom infrastructure patent space is extremely nascent, with 11 patent families in scope and activity concentrated almost entirely among four applicants. Filing volume peaked sharply in 2022 and has since tapered, suggesting the field is still forming rather than maturing.
Four applicants dominate a highly concentrated, early-stage space
Causam Energy Inc and Georgia Tech Research Corporation each hold the largest positions among ranked filers, with Virginia Tech Intellectual Properties Inc and Huawei Digital Power Technologies Co., Ltd. occupying smaller but notable positions in the ranking.
The top five filers account for 100% of the combined total among the hundred largest filers, signaling extreme concentration. There is effectively no long tail of secondary competitors at this stage, making this a founder-dominated niche.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | Causam Energy Inc | 7 | |
| 2 | Georgia Tech Research Corporation | 7 | |
| 3 | Virginia Tech Intellectual Properties Inc | 2 | |
| 4 | Huawei Digital Power Technologies Co., Ltd. | 2 |
This level of concentration implies that any new entrant would be entering a space where the principal claim landscape is largely controlled by two U. S. research institutions and one commercial energy firm, with Huawei’s digital power arm representing the only major industrial incumbent present.
Patent publications for the most recent 18–24 months are typically under-counted due to publication lag; the apparent absence of filings in 2025–2026 should not be read as a halt in activity. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
A 2022 filing spike anchors a field still taking shape
The annual filing trend reveals a sharp burst of activity in 2022 followed by rapid tapering, while the technology composition shows power-system and conversion classes dominating with several adjacent branches sparsely represented.
Annual filing trend
Filing activity was zero from 2017 through 2021, then surged to seven records in 2022 before declining to three in 2023 and one in 2024. Given publication lag, 2024–2026 figures are under-counted and should not be interpreted as the end of activity.
↗ Hover for values · click a bar to ask EurekaTechnology composition
H02J (Power supply and grid systems) and H02M (Power conversion) are the dominant technology branches, reflecting the core power-electronics character of the field. G08B (Signalling and alarm systems) appears prominently alongside Causam Energy’s portfolio emphasis, while B60L, G06F, and H01F each represent sparse, adjacent areas.
↗ 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.
Power supply system for a data centre
A power supply system includes one or more solid state transformers (SST), one or more first stage DC-DC converters and one or more second stage DC-DC converters. The one or more solid state transformers (SST) are configured to convert any medium-voltage Alternating Current (MVAC) input or medium-voltage Direct Current (MVDC) input to a first low-voltage… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Modular multiport ac battery power converter syste… | 4 |
| 2 | System, method, and apparatus for electric power g… | 4 |
| 3 | System, method, and apparatus for electric power g… | 3 |
| 4 | Power supply system for a data centre | 2 |
| 5 | Matrix integrated transformer with built-in leakag… | 2 |
| 6 | System, method, and apparatus for electric power g… | 2 |
| 7 | Modular multiport ac battery power converter syste… | 1 |
| 8 | System, method, and apparatus for electric power g… | 1 |
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 structure means for R&D investment decisions
With only 11 patent families in scope and a single dominant filing year, the competitive dynamics here are those of an emerging niche rather than an established technology domain. Engineers and strategists should calibrate expectations accordingly.
Embryonic field with a single-year activity spike
The lifecycle stage is not yet determinable from available evidence, consistent with a field where the entire corpus spans just a few years and filing volume remains in single digits annually. The 2022 spike likely reflects a focused research program rather than broad industry adoption. Entry barriers from prior art are low, but claim density around power-conversion and grid-integration topologies is building.
Early stageTwo research institutions and one commercial firm hold the field
Causam Energy Inc and Georgia Tech Research Corporation together account for the overwhelming share of ranked filer activity, with Virginia Tech Intellectual Properties Inc and Huawei Digital Power Technologies Co., Ltd. as secondary participants. The top five filers represent 100% of the top-hundred filers’ combined total. A new entrant faces a landscape where foundational positions are already staked but the overall corpus is small enough that targeted filings could still establish meaningful differentiation.
High concentrationNo co-applicant activity detected in this corpus
The collaboration evidence is absent for this topic — no co-filed patents between distinct applicants were identified in the dataset. This absence may reflect the early stage of the field or the proprietary posture of current participants. It also indicates that cross-institutional or industry-academia joint filings have not yet emerged as a structuring force, leaving open the possibility that the first collaborative program could set the agenda for the space.
Evidence pendingUnited States leads; Europe, Australia, and PCT show early international reach
The United States is the primary filing jurisdiction, followed by Europe via the EPO, Australia, and WIPO PCT. Canada also appears. This geographic spread suggests applicants are pursuing international protection from an early stage, which is consistent with the research-institution profiles of the leading filers. For a new entrant, U.S. and EPO filings represent the minimum viable jurisdictional footprint based on current patterns.
US-led, multi-jurisdictionalGo 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.
Causam Energy and Georgia Tech lead with distinct technology emphases
The two largest filers approach the space from different angles: Causam Energy emphasizes grid signalling and power-supply systems, while Georgia Tech Research Corporation focuses on power conversion and grid integration topologies.
Causam Energy Inc
Causam Energy Inc holds 7 patent records in the ranked corpus, concentrated in G08B (Signalling and alarm systems) and H02J (Power supply and grid systems). This dual emphasis on grid signalling alongside power supply suggests a system-level, grid-management orientation rather than a pure power-electronics approach. No momentum trend data is available from the evidence for this applicant.
families: 7Georgia Tech Research Corporation
Georgia Tech Research Corporation also holds 7 patent records and is flagged as a new entrant in the momentum data, indicating its activity in this specific niche is recent. Its technology focus is centred on H02M (Power conversion, AC/DC), H02J (Power supply and grid systems), and B60L (Electric vehicle propulsion), reflecting a power-electronics research programme with cross-domain reach into EV systems.
families: 7| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| Georgia Tech Research Corporation | 7 | ▲ new entrant |
| Virginia Tech Intellectual Properties Inc | 2 | ▲ new entrant |
| Huawei Digital Power Technologies Co., Ltd. | 2 | ▲ new entrant |
Under-served branches adjacent to the dominant power-systems core
Three IPC branches each account for just two patent records, representing areas where technical overlap with solid-state transformer functionality exists but dedicated coverage is sparse. These are observations of relative sparsity within this small corpus, not validated market opportunities.
H01F · Magnets, Inductors & Transformers
With only two patent records, the H01F branch — covering the physical transformer component design, including magnetic materials, winding geometry, and leakage inductance management — is underserved relative to the system-level H02J and H02M classes. Virginia Tech Intellectual Properties Inc holds the primary positions here (H01F 27). Given that transformer core and winding design is a known performance bottleneck in solid-state transformer efficiency, this branch has plausible technical value. An entrant with magnetics expertise could file targeted claims around high-frequency core materials or integrated winding structures for telecom power densities.
Search this in Eureka →G06F · Electric Digital Data Processing
Only two patent records fall under G06F, which covers digital control, firmware, and data-processing methods relevant to power management and monitoring in telecom infrastructure. Huawei Digital Power Technologies Co., Ltd. holds the current positions in this branch. Control-plane intelligence — such as adaptive load management, predictive fault detection, and digital twin modelling of transformer behaviour — represents a technically adjacent layer that remains largely unclaimed in this corpus. The entry path is accessible for software-hardware co-design teams with existing telecom power-management expertise.
Search this in Eureka →How leaders differ by technology route
Strength of each leader across the main technology routes.
| Player | H02J 3 · Power supply & grid systems | H02M 7 · Power conversion (AC/DC etc.) | G08B 1 · Signalling & alarm systems | H02J 7 · Power supply & grid systems | H02M 3 · Power conversion (AC/DC etc.) |
|---|---|---|---|---|---|
| Causam Energy Inc | Strong · 7 | Absent | Strong · 7 | Absent | Absent |
| Georgia Tech Research Corporation | Moderate · 2 | Strong · 7 | Absent | Strong · 4 | Absent |
| Huawei Digital Power Technologies Co., Ltd. | Absent | Strong · 2 | Absent | Absent | Strong · 2 |
| Virginia Tech Intellectual Properties Inc | Absent | Absent | Absent | Absent | Strong · 2 |
Frequently asked questions
The current corpus contains 11 patent families in scope. This is a very small corpus, consistent with an early-stage or emerging niche rather than an established technology domain.
Causam Energy Inc and Georgia Tech Research Corporation each hold the largest positions among ranked filers, followed by Virginia Tech Intellectual Properties Inc and Huawei Digital Power Technologies Co., Ltd. All four are flagged as the top-ranked applicants in the evidence.
Filings were zero from 2017 through 2021. Activity surged to seven patent records in 2022, then fell to three in 2023 and one in 2024. Figures for 2024 onward are likely under-counted due to publication lag, so the apparent taper should not be read as a confirmed decline.
H02J (Power supply and grid systems) and H02M (Power conversion, AC/DC and related) are the dominant IPC classes. G08B (Signalling and alarm systems) also appears prominently, largely due to Causam Energy’s portfolio emphasis.
The United States leads with six patent records, followed by Europe via the EPO with four, Australia and WIPO PCT each with three, and Canada with two. The multi-jurisdictional spread from the outset reflects the research-institution character of the primary filers.
No co-applicant filings were identified in the corpus. The absence of collaboration signals that applicants are currently pursuing independent, proprietary positions rather than joint programmes. This leaves open the possibility that the first consortium or co-filing agreement in this niche could be strategically significant.
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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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