Li-Ion Modular Swappable Pack Patent Snapshot 2026
The patent corpus for Li-Ion modular and swappable pack technology is very small, with Briggs & Stratton Corp holding the dominant position and filings concentrated in India. The field is nascent and structurally open, with the vast majority of adjacent technology branches holding only a single patent record each.
Briggs & Stratton leads a highly concentrated, nascent field
Briggs & Stratton Corp ranks first among all filers, holding 5 patent records — by far the largest position in the corpus. The next nine ranked applicants each hold a single patent record, underscoring how thin the competitive layer below the leader actually is.
The top five filers account for 64% of the combined total among the ranked applicants visible in this query, a concentration level that is high even for an early-stage field. In practice, nearly all meaningful prior art traces back to one commercial entity and a small cluster of individual inventors.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | BRIGGS & STRATTON CORP | 5 | |
| 2 | DR PRATIBHA SHARMA | 1 | |
| 3 | KANNAN A | 1 | |
| 4 | MITHUN L | 1 | |
| 5 | SURYA P | 1 | |
| 6 | SREE BALAJI V S | 1 | |
| 7 | DR SHIVRAJ GANGADHAR WANALE | 1 | |
| 8 | DR RAVI BANSAL | 1 | |
| 9 | DR GAJENDRA KUMAR INWATI | 1 | |
| 10 | UNIV OF ENG & MANAGEMENT (UEM) | 1 |
Briggs & Stratton’s lead is grounded in overlapping battery-cell and internal-combustion-engine IP, reflecting a hybrid-power product strategy rather than a pure EV or grid-storage focus. This means the incumbent’s patents may have limited blocking power outside the small-engine and outdoor-power-equipment segment.
Patent publication typically lags filing by 12–18 months, so the most recent periods in this corpus are likely under-represented; the true current state of activity may be somewhat higher than the record count suggests. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Activity is only just emerging, with batteries and combustion engines as co-dominant branches
The filing trend and technology composition together reveal a field that has produced virtually no activity before 2024, alongside a technology mix that spans battery chemistry, combustion-engine integration, and vehicle propulsion.
Annual filing trend
Recorded filings were zero across every year from 2017 through 2023, with a single record appearing in each of 2024, 2025, and 2026. Given that the most recent 18–24 months are subject to publication lag, these three periods are almost certainly under-counted and should not be read as a steady-state signal.
↗ Hover for values · click a bar to ask EurekaTechnology composition
H01M (batteries, cells and fuel cells) is the leading branch, followed by F02B (internal-combustion engines), then B60L (electric vehicle propulsion). The remaining eight branches — covering vehicle accessories, hybrid control, cycle frames, engine cooling, engine starting, pumps, and electrical measurement — each carry a single patent record, indicating that the field’s technical scope is broad but shallow outside the core battery and engine classes.
↗ 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.
Internal combustion engines including electric sta…
An internal combustion engine includes an engine block including a cylinder, a piston positioned within the cylinder and configured to reciprocate within the cylinder, a crankshaft driven by the piston, a fuel system for supplying an air-fuel mixture to the cylinder, a starter motor configured to initiate rotation of the crankshaft to start the engine, a… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Internal combustion engines including electric sta… | 8 |
| 2 | Internal combustion engines including electric sta… | 8 |
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.
Assignee snapshot from the current evidence set
The applicants below are visible in this query result. Because the evidence set is relatively small, read this section as a directional snapshot rather than a full competitive ranking.
Briggs & Stratton Corp
Briggs & Stratton Corp holds 5 patent records, concentrated in H01M 50 (battery and cell structures), F02B 63 (internal-combustion engine integration), and F01P 5 (engine cooling). This combination points to a swappable-pack architecture designed for hybrid small-engine products rather than pure electric vehicles. No momentum data is available for this filer in the recent-vs-prior window, but its multi-jurisdictional footprint — EPO, Australia, US, and PCT — indicates a deliberate international protection strategy established prior to the current observation window.
patent records: 5University of Engineering & Management (UEM)
UEM holds 1 patent record, focused exclusively on B60L (electric vehicle propulsion) across three sub-classes — B60L 50, B60L 58, and B60L 7 — covering propulsion, battery management, and regenerative braking contexts. This EV-propulsion emphasis is technically distinct from the leader’s combustion-engine focus, representing a different application vector. UEM enters as a new entrant with a single filing, consistent with academic exploratory IP.
patent records: 1Frequently asked questions
The corpus covers 3 patent families in scope. The applicant ranking is based on patent records, with Briggs & Stratton Corp leading at 5 patent records.
Briggs & Stratton Corp holds the leading position with 5 patent records, well ahead of the next nine filers who each hold a single patent record. The top five filers collectively account for 64% of the combined total among the ranked applicants visible in this query.
India leads with 3 patent records, followed by Europe (EPO) with 2, and Australia, the United States, and WIPO (PCT) each with 1. Key markets such as China, Japan, and South Korea have no recorded filings in this corpus.
H01M (batteries, cells and fuel cells) is the most represented branch, followed by F02B (internal-combustion engines) and B60L (electric vehicle propulsion). The remaining eight IPC branches each carry only a single patent record.
No co-applicant or joint-filing relationships are recorded in the collaboration data for this corpus. All filers appear to be acting independently as of the evidence available.
B60W (hybrid and joint vehicle control), B62K (cycles and frames), B62M (cycle drive and transmission), F01P (engine cooling), and G01R (electric and magnetic measurement) each carry only a single patent record, making them the most sparsely covered adjacent branches in the corpus.
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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.
Nothing on this page constitutes an exhaustive prior-art, novelty, freedom-to-operate, or validity search, nor does it constitute legal, financial, investment, or professional advice, and it should not be relied upon as such. Any patent, commercial, or strategic decision should be verified independently and reviewed with qualified patent, legal, and domain professionals. Patsnap makes no warranties, express or implied, as to the accuracy, completeness, or fitness for any particular purpose of the information presented.