Green Building Envelope Patent Landscape 2026
Green Building Envelope Patent Landscape in 2026
The green building envelope patent field spans 2,102 patent families and is moderately fragmented, with no single applicant holding a dominant share, though the United States is the clear primary filing jurisdiction. Activity peaked in 2019 and has eased since, placing the field in a post-peak phase where selective R&D investment in under-served sub-domains can still yield differentiated positioning.
Fragmented field led by Hohmann & Barnard with a shallow tier gap
Hohmann & Barnard Inc holds the top position with 73 patent families, followed by Z Modular Holding Inc at 58 and Huber Engineered Woods at 55. No single applicant commands a commanding lead, reflecting a structurally fragmented competitive field.
The top five applicants account for 16% of the combined output of the hundred largest filers — a relatively low concentration ratio indicating that the competitive space remains open and that mid-tier challengers can build meaningful positions through targeted filing strategies.
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 1 | HOHMANN & BARNARD INC | 73 | |
| 2 | Z Modular Holding Inc | 58 | |
| 3 | Huber Engineered Woods LLC | 55 | |
| 4 | Ciuperca Romeo Ilarian | 47 | |
| 5 | View Operating Corp | 40 | |
| 6 | The Shredded Tire Inc | 36 | |
| 7 | Carrier Corp | 34 | |
| 8 | James Hardie Technology Ltd | 33 | |
| 9 | SunArc of Canada | 33 | |
| 10 | Q Bot Ltd | 32 |
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 11 | Blu Homes Inc | 31 | |
| 12 | Johnson Controls Technology Co | 29 | |
| 13 | Termotera Ltd | 29 | |
| 14 | IIS Institute for Independent Studies GmbH | 28 | |
| 15 | Owens Corning Intellectual Capital LLC | 28 | |
| 16 | United States Gypsum Co | 26 | |
| 17 | Resideo LLC | 25 | |
| 18 | Tremco CPG Inc | 24 | |
| 19 | Alabama Metal Industries Corp | 23 | |
| 20 | Kingspan Holdings (IRL) Ltd | 23 |
The leaders’ positions reflect distinct technology bets: structural building elements dominate for Hohmann & Barnard and Ciuperca Romeo Ilarian, while View Operating Corp has staked its portfolio on optical control and smart glazing, and Johnson Controls Technology focuses on building control and HVAC integration.
Filing counts for 2024–2026 are understated due to standard patent publication lag; the apparent recent decline should not be read as a reversal of any applicant’s activity. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Post-peak volume with structural elements dominating the technology mix
Annual filing volume and technology composition together reveal where momentum has concentrated and where the portfolio is thinning. Both charts point to a maturing core with several adjacent branches still lightly contested.
Annual filing trend
Filings rose from 187 in 2017 to a peak of 318 in 2019, then eased to the low-200s range through 2022–2023. 2024 and 2025 figures appear lower but are subject to publication lag and should not be interpreted as confirmed decline; 2026 data covers only a partial year.
↗ Hover for values · click a bar to ask EurekaTechnology composition
E04B (building structures and elements) is by far the dominant class, reflecting the field’s core focus on structural envelope innovation. F24F (air conditioning and ventilation) is a strong secondary branch, followed by E04C (structural components), B32B (layered products), and E04F (building finishing) — together outlining a technology mix that spans physical construction, thermal management, and surface systems.
↗ 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.
Angle-selective irradiation insulation on a buildi…
In a method for producing a building envelope part (<b>19</b>) for angle-selective irradiation insulation on a building envelope, which building envelope part (<b>19</b>) has an outer surface (<b>29</b>), an inner surface (<b>39</b>) opposite the outer surface (<b>29</b>), and a side edge that bounds the outer surface (<b>29</b>) and the inner surface… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Systems and methods for statistical control and fa… | 490 |
| 2 | Systems and methods for controlling energy use in … | 333 |
| 3 | Predictive building control system and method for … | 330 |
| 4 | System and method for fault analysis and prioritiz… | 267 |
| 5 | Photocatalytic air disinfection | 263 |
| 6 | Method and apparatus for graphical display of a co… | 262 |
| 7 | Building management system with fault analysis | 242 |
| 8 | Composite insulated framing members and envelope e… | 241 |
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
Reading concentration, lifecycle stage, collaboration patterns, and geographic filing together gives a clearer picture of where competitive risk is high, where white space exists, and which markets warrant priority attention.
Post-peak field with easing annual volume
The lifecycle evidence classifies the field as in decline, with annual filings easing back from the 2019 peak of 318 families. Multi-year cumulative output remains substantial at 2,102 families, but the era of rapid volume growth has passed. New entrants and incumbents alike should focus on quality and claim breadth rather than volume, targeting sub-domains where coverage is still sparse.
Post-peak · 2019 peakLow top-5 share signals open competitive terrain
The top five filers hold only 16% of the hundred largest filers’ combined output, the lowest tier of concentration for a field of this size. This means no applicant has locked up a dominant blocking position across the landscape. Mid-tier players and new entrants face a relatively low barrier to building a differentiated portfolio, particularly in branches such as roofing, layered laminates, and digital control integration where coverage is thinner.
Low concentrationLimited co-filing activity; one identified partnership
The evidence identifies one active co-filing relationship: Z Modular Holding Inc and Victor Bloc Corp, with 8 jointly filed patent families. Beyond this pair, collaboration activity appears sparse in the corpus, suggesting that most applicants are pursuing proprietary rather than consortium-based IP strategies. Teams evaluating partnership-driven R&D may find open-collaboration positioning as a differentiator.
Sparse co-filingUS-centric filing with moderate European and Canadian presence
The United States accounts for the largest share of filing activity, followed by Europe (EPO) and Canada at similar levels, with WIPO PCT and China also represented. Asian markets — Japan and South Korea — show notably lower activity relative to their construction sectors, suggesting an underprotected position in fast-growing Asia-Pacific green building markets. India and Australia show early-stage but growing presence.
US-led · Asia underweightedGo 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.
| Applicant | Collaborator | Co-filings |
|---|---|---|
| Z Modular Holding Inc | Victor Bloc Corp | 8 |
Co-filing pairs, ranked by the number of jointly-filed patent families.
Hohmann & Barnard leads on volume; View Operating Corp shows accelerating momentum
The top two players by patent family count represent contrasting strategies: structural hardware dominance versus smart-glazing and controls integration. Their diverging technology emphases and filing trajectories define the two main competitive poles in the landscape.
Hohmann & Barnard Inc
Hohmann & Barnard leads the field with 73 patent families, concentrated in E04B building structures and elements. The portfolio reflects a deep, sustained focus on structural envelope hardware — anchors, ties, and masonry support systems — rather than digital or thermal management technologies. Momentum data is not separately reported for this applicant in the recent-window analysis, but the breadth of the portfolio signals an established, incumbent-level defensive position.
families: 73View Operating Corp
View Operating Corp holds 40 patent families and is the standout momentum story, with recent filings up 50% versus the prior three-year window. Its portfolio is concentrated in G02F optical control and modulation, G05B control and regulating systems, and E06B doors, windows, and shutters — a coherent smart-glazing strategy that links dynamic glass performance with building automation. This trajectory positions View as the most active growth-stage challenger in the digital envelope sub-domain.
families: 40| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| Huber Engineered Woods LLC | 7 | ▼ -36% |
| View Operating Corp | 21 | ▲ +50% |
| Z Modular Holding Inc | 6 | ▲ new entrant |
| Johnson Controls Technology Co | 4 | ▼ -67% |
Under-served branches adjacent to the dominant structural core
Several IPC classes sit at the margins of the green building envelope corpus with relatively lower patent-record counts, indicating areas where the field has not yet been heavily contested. These observations do not constitute validated commercial opportunities but highlight branches worth technical evaluation.
E04D · Roofing & roof coverings
Roofing and roof coverings (E04D) holds 412 patent records — significant in absolute terms but just 4% of the total technology composition, ranking below structural elements, HVAC, and layered products. Given the direct thermal performance and water management role of roofing in building envelopes, this relatively thin coverage suggests that integrated green-roof and cool-roof innovations may be under-patented relative to their engineering importance. An entrant with composite roofing or bio-based membrane technology could find limited prior-art density in targeted sub-classes.
Search this in Eureka →G05B · Control & regulating systems
Control and regulating systems (G05B) accounts for 319 patent records — roughly 3% of the composition — despite building automation being a rapidly growing segment of the green envelope market. The most-cited patents in the corpus include predictive building control, fault analysis, and energy-use optimization systems, yet the active filers in this class are few. Teams with embedded sensing, edge-AI, or demand-response integration capabilities may find this an accessible adjacent branch with high strategic value relative to current filing density.
Search this in Eureka →How leaders differ by technology route across structural, thermal, and control domains
Strength of each leader across the main technology routes.
| Player | E04B 1 · Building structures & elements | E04B 2 · Building structures & elements | E04C 2 · Structural building components | F24F 11 · Air conditioning & ventilation | E04F 13 · Building finishing |
|---|---|---|---|---|---|
| Huber Engineered Woods LLC | Strong · 52 | Strong · 48 | Strong · 44 | Absent | Moderate · 16 |
| Ciuperca Romeo Ilarian | Strong · 36 | Strong · 30 | Strong · 25 | Absent | Moderate · 10 |
| James Hardie Technology Ltd | Strong · 25 | Strong · 29 | Absent | Absent | Moderate · 11 |
| Z Modular Holding Inc | Strong · 40 | Absent | Absent | Absent | Absent |
| Q Bot Ltd | Strong · 32 | Absent | Absent | Absent | Absent |
Frequently asked questions
The corpus covers 2,102 patent families. This represents the deduplicated family-level count across the global scope of the analysis.
Hohmann & Barnard Inc leads with 73 patent families, ahead of Z Modular Holding Inc at 58 and Huber Engineered Woods at 55. All three focus heavily on structural building elements (E04B).
The field peaked in 2019 at 318 annual filings and has eased since. The lifecycle evidence classifies the field as in a decline phase on an annual-volume basis. Note that 2024–2026 figures are understated due to publication lag, so the magnitude of recent easing is likely overstated in the raw data.
The United States is the dominant filing jurisdiction, followed by Europe (EPO) and Canada at similar levels, with WIPO PCT and China also holding meaningful shares. Japan and South Korea show lower filing activity relative to the size of their construction markets.
Concentration is low. The top five applicants account for 16% of the combined output of the hundred largest filers, indicating a fragmented competitive field where no single player has a blocking position across the broad technology space.
Roofing and roof coverings (E04D) and building control and regulating systems (G05B) are notably thinner in coverage relative to their engineering relevance, each representing 4% and 3% of patent records respectively. These branches may offer accessible entry points for applicants with differentiated technology in integrated roofing or building automation.
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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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