Virtualization & Hypervisor Patents: Who Leads, Where Gaps Are 2026
- Filings peaked in 2018 at 90 and have declined since, with the 2022 midpoint at 54 — this is a maturing claim space, not a growing one.
- The most-cited prior art dates to 2007–2012, meaning the influential foundational claims on load-balancing and multi-level virtualization are now over a decade old.
- Every tracked leading assignee shows 0 filings in the latest year, a pattern consistent with publication lag rather than an actual stop in R&D.
What this landscape covers
This landscape tracks patent families combining hypervisor, virtual machine management and hardware virtualization claims with specific technical mechanisms: live migration, device passthrough, nested virtualization, overhead reduction and isolation guarantee, filtered to IPC classes G06F9, G06F12 and G06F21. The dataset spans 797 patent families published between 2015 and mid-2026, giving a fairer count than raw document totals because families collapse continuations and multi-jurisdiction duplicates into a single unit.
Filing activity in this set is concentrated in the United States, with the EPO, WIPO/PCT, China, the UK and India making up the next tier of receiving offices. That distribution points to a technology whose core claims were staked out early and predominantly in US filings, with international filing used selectively rather than as a blanket strategy.
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Filing trend and technology composition
Two views of the same 797-family dataset: how filing volume has moved year over year, and which IPC subclasses the claims actually sit in.
A declining filing curve since 2018
Filings ran from 57 in 2017 to a peak of 90 in 2018, then eased back toward the 2022 midpoint of 54. The most recent year shows only 1 filing, which reflects the roughly 18-month lag between filing and publication rather than a real halt in activity — but the multi-year decline from the 2018 peak is a genuine trend, not an artifact of the cut-off.
G06F dominates; H04L is the only meaningful secondary class
All 797 records sit in G06F (electric digital data processing), confirming the search scope, while 105 also touch H04L (digital information transmission) — consistent with live-migration and networked virtualization claims. Business-process, imaging and AI-adjacent classes (G06Q, G06T, G06N) appear only incidentally, meaning this remains a systems-and-infrastructure field rather than an application-layer one.
Shares are the percentage of the 797 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Virtualization and Hypervisor Technology with Eureka
This page is one run against one query. Ask Eureka your own question about virtualization and hypervisor technology and every answer comes back with the patent numbers behind it.
Try EurekaThe most-cited prior art in this space
Hypervisor to support nested virtualization (US10275269B1)
The patent describes a first hypervisor, loaded at boot, that instantiates a virtual machine and exposes an emulated hardware virtualization support interface to it. A second hypervisor — one that does not itself support nested virtualization — runs inside that first virtual machine. The first hypervisor supplies the nested virtualization support the second hypervisor lacks, letting a third hypervisor run inside a second virtual machine by abstracting hardware virtualization support up through the stack.Filed by Hewlett-Packard Development Company, L.P.; granted 2019-04-30.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20110194563A1 | Hypervisor Level Distributed Load-Balancing | 279 |
| 2 | US20070050764A1 | Hierarchical virtualization with a multi-level virtualization mechanism | 264 |
| 3 | US20120278804A1 | Virtual machine and application movement over a wide area network | 239 |
| 4 | US20110185064A1 | System and method for fair and economical resource partitioning using virtual hypervisor | 181 |
| 5 | US20120324236A1 | Trusted Snapshot Generation | 179 |
| 6 | US9268586B2 | Wake-on-LAN and instantiate-on-LAN in a cloud computing system | 168 |
| 7 | US20090070760A1 | Virtual Machine (VM) Migration Between Processor Architectures | 162 |
| 8 | US20140173600A1 | Dynamic device virtualization | 126 |
| 9 | US20080034365A1 | System and method for providing hardware virtualization in a virtual machine environment | 123 |
| 10 | US20110004878A1 | Methods and systems for selecting a desktop execution location | 119 |
Citation counts inside a searched corpus favour older filings simply because they have had more time to be cited — read these as markers of technical influence, not of current commercial relevance.
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Three read-throughs from the trend, the citation table and the co-assignee data — each with a direct implication for where to file or partner.
Core hypervisor claim space is largely staked out
The run-up to 2018 reflects the initial land grab around live migration and nested virtualization as cloud infrastructure matured. The decline since suggests the foundational mechanisms are now covered by existing families, pushing new filers toward narrower implementation details rather than base architecture.
Influential prior art predates the current cloud stack
The five most-cited records were published between 2007 and 2012, before container orchestration and modern multi-tenant cloud platforms were standard. Their continued citation weight signals that load-balancing and multi-level virtualization concepts from that era still anchor examiner searches today.
Collaborative filing is the exception, not the norm
Only 10 co-assignee pairs appear across 797 families, and the strongest pairings are intra-group — a parent filer with its regional subsidiary or IP department rather than filings between independent competitors. Cross-company joint filing is not a meaningful pathway into this space.
This is a US-centered filing strategy with selective spillover
The United States accounts for the clear majority of receiving-office activity, with EPO, WIPO/PCT, China, the UK and India each taking a modest secondary share. Filers protecting hypervisor claims outside the US are being selective about which markets warrant the extra cost, rather than filing broadly.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to virtualization and hypervisor technology, with the prior art for and against each one.
Who holds the claims — and where the momentum has gone quiet
The named assignees below cover the infrastructure vendors and platform companies most active in this dataset; all of them show zero filings in the latest tracked year, which is expected given publication lag but worth confirming against each company's current roadmap before drawing conclusions.
IBM
IBM appears both independently and through its China subsidiary in the strongest co-assignee pairing in the dataset, and also co-files with its UK IP department — a pattern of centrally coordinated, group-wide patent management rather than a single filing entity.
VMware
As the assignee most associated with hypervisor architecture historically, VMware's drop to zero filings in the latest year is consistent with the broader post-2018 decline across the dataset rather than a company-specific retreat.
Microsoft
Microsoft's hypervisor-related filings follow the same flat-to-declining trajectory as the rest of the field, suggesting that its Hyper-V-adjacent patenting has shifted toward adjacent IPC classes not captured by this specific search string.
Red Hat
Red Hat and Red Hat Israel both register in the assignee set, reflecting the KVM and open virtualization ecosystem's patenting activity — again tapering to zero in the most recent tracked year alongside every other major filer.
| Assignee | Recent year | YoY |
|---|---|---|
| VMware, Inc. | 0 | -100% |
| Microsoft Technology Licensing, LLC | 0 | -100% |
| International Business Machines Corporation (IBM) | 0 | — |
| Red Hat, Inc. | 0 | -100% |
| NUTANIX INC | 0 | -100% |
| RED HAT ISRAEL | 0 | — |
| Dell Products L.P. | 0 | — |
| Google LLC | 0 | — |
Where to take this analysis
The dataset points to a maturing core with narrow open branches. Two practical next steps follow from that.
Run a freedom-to-operate check on a specific mechanism
If you are implementing nested virtualization, device passthrough or live migration, check the claim scope of the most-cited records in this set against your specific implementation before committing engineering resources.
Search this technology in EurekaTrack the assignees showing renewed activity
Publication lag means the zero-filing figures for the latest year understate real activity. Re-run this landscape in two to three quarters to see which companies resume filing once the lag clears.
Set up monitoring in EurekaCommon questions about virtualization and hypervisor patents
Based on citation counts in this dataset, the most influential hypervisor patents were filed by companies working on hypervisor-level load balancing, multi-level virtualization and virtual machine mobility, with the highest-cited records published between 2007 and 2012. IBM, VMware, Microsoft and Red Hat are the most consistently represented assignees across the broader 797-family dataset. Citation counts favour older filings simply because they have had more years to accumulate citations, so treat this as a measure of technical influence rather than current market share.
No — filings peaked in 2018 at 90 and had declined to 54 by the 2022 midpoint, indicating a maturing rather than expanding claim space. The apparent drop to near zero in the most recent year is largely a publication-lag artefact, since patents typically take about 18 months to publish after filing. The genuine, multi-year decline from the 2018 peak is the more reliable signal than any single recent year.
US10275269B1, assigned to Hewlett-Packard Development Company, covers a technique where a first hypervisor exposes an emulated hardware virtualization interface to a virtual machine, allowing a second hypervisor that lacks native nested virtualization support to run inside that VM and still host a third hypervisor. In practice, this blocks straightforward implementations of stacking three or more hypervisor layers using emulated virtualization support without a licence or a materially different mechanism. Anyone building multi-level nested virtualization should review this claim scope directly rather than relying on this summary alone.
The United States dominates receiving-office volume in this dataset with 533 filings, far ahead of the EPO at 87, WIPO/PCT at 46, China at 21, the UK at 18 and India at 17. This concentration suggests that companies are staking out core hypervisor claims primarily in the US market and filing more selectively elsewhere, rather than pursuing broad multi-jurisdiction coverage for every invention.
Based on this dataset, thinner coverage appears in areas like cross-hypervisor live migration without shared storage, passthrough device state preservation across nested layers, and isolation guarantees specific to GPU passthrough. These sit inside the searched technical scope but are not well represented among the highest-cited or highest-volume records, which cluster around older, more general load-balancing and multi-level virtualization mechanisms. Any filing strategy targeting these branches should still be checked against a full freedom-to-operate search, since absence from this dataset does not guarantee absence of prior art elsewhere.
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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.
Machine translation. Assignee and organisation names originally recorded in Chinese, Japanese or Korean have been rendered into English by an AI translation step so that the tables stay readable. These renderings are best-effort and may not match a company’s registered English name; the original name is what the underlying patent record carries, and it is what any Eureka query launched from this page uses.