Construction & Civil Engineering Patents: Top Companies & Trends 2026
- A long tail, not a cartel. the leading assignee holds 91 records out of 3,222, and the top 5 combined account for just 7.6% of all records in scope.
- Digital tooling has entered structural claims. G06F (electric digital data processing) now sits ahead of every classic structural IPC subclass at 16.0% of records, alongside G06T image processing at 7.7%.
- Filing kept climbing through the most recent complete year. activity rose from 216 records in 2021 to 266 in 2024, a 23% increase, before the expected publication lag thins out 2025-2026 counts.
Filing growth compares 2021 (216 records) with 2024 (266) — a three-year span. 2024 is the most recent year we treat as complete: publication lags filing by roughly 18 months, so 2025 onwards are still filling in and any growth rate that ends there would understate the field. Top-5 share is the combined record count of the five largest assignees divided by all 3,222 records in scope (CR5), not by the ranked leaders only.
What this landscape covers
This dataset spans 3,222 published patent records filed or published between 2015 and mid-2026, drawn from a search across civil, construction and underground engineering together with adjacent structural, tunnel, bridge, modular-construction and monitoring terms. The scope deliberately mixes classic structural disciplines with the digital layer now built into them: Building Information Modeling, infrastructure monitoring and image-based inspection all sit inside the same search string as foundations, formwork and structural components.
Because publication trails filing by roughly 18 months, the 2025 and 2026 counts in this dataset are still filling in and should not be read as a slowdown. The clearest read on momentum is the 2021-2024 window, where filings rose from 216 to 266 records.
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Filing trend and technology composition
Two views of the same 3,222 records: how filing volume moved year over year, and which IPC subclasses carry the claim density today.
Filing trend, 2017-2026
Records climbed from 164 in 2017 to a peak of 266 in 2024, including the 216-to-266 rise (+23%) between 2021 and 2024. 2025 and 2026 figures are understated because of publication lag and should not be read as declining activity.
IPC subclass composition
G06F (electric digital data processing) leads at 16.0% of the 3,222 records, ahead of the traditionally dominant E04B building structures (12.5%) and E02D foundations and earth drilling (11.0%) classes. G06Q business-process data (9.2%) and G06T image processing (7.7%) round out a digital-tooling cluster that now rivals the structural classes in filing density. Because records can carry multiple IPC codes, these shares sum to more than 100% of records.
Shares are the percentage of the 3,222 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Construction, Civil & Underground Engineering Patent Landscape with Eureka
This page is one run against one query. Ask Eureka your own question about construction, civil & underground engineering patent landscape and every answer comes back with the patent numbers behind it.
Try EurekaA representative recent filing
Management assistance system for building or civil engineering structure (US20250334978A1)
The filing describes a management assistance system pairing a BIM/CIM attribute database with target markers fixed to specific structures, a mobile robot that patrols a site and scans its periphery to acquire three-dimensional point cloud data, and a computer that recognises the position and posture of marked structures from that point cloud data.Filed by IXS Co., Ltd., published 2025-10-30.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20130073387A1 | System and method for providing educational related social/geo/promo link promotional data sets for end user … | 666 |
| 2 | US5189606A | Totally integrated construction cost estimating, analysis, and reporting system | 620 |
| 3 | US20080134589A1 | System for modular building construction | 366 |
| 4 | US20010047251A1 | CAD system which designs 3-D models | 358 |
| 5 | US20020035495A1 | Method of providing maintenance services | 351 |
| 6 | US20200175352A1 | Structure defect detection using machine learning algorithms | 314 |
| 7 | US20130216089A1 | Method and System for Remotely Inspecting Bridges and Other Structures | 273 |
| 8 | US7827738B2 | System for modular building construction | 214 |
| 9 | US5950543A | Evacuated tube transport | 198 |
| 10 | US2885822A | Construction set | 189 |
Citation counts favour older records inside any searched corpus; treat them as a signal of influence on the field, not of current commercial relevance.
Each row carries its publication number; clicking a row searches Eureka by that number.
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Three patterns stand out once the records are broken down by year, assignee and classification.
No single filer dominates the field
The leading assignee holds 91 records; by fifth place the count is down to 26, and even the top 10 combined reach only 11.1% of all 3,222 records in scope. That leaves most of the landscape held by single-digit filers rather than a handful of blocking portfolios.
Filing momentum built through the last complete year
Volume rose 23% from 2021 to 2024, the last year unaffected by publication lag. 2025 and 2026 counts will continue to fill in as those applications publish, so the apparent tail-off in the most recent two years is an artefact of timing, not falling interest.
Digital data processing now outranks structural classes
G06F (electric digital data processing) appears in a larger share of records than E04B building structures (12.5%) or E02D foundations and earth drilling (11.0%). Combined with G06T image processing (7.7%) and G06Q business-process data (9.2%), the digital layer is now a filing centre in its own right, not a side note to structural claims.
Filing offices skew toward the US and China
The United States (870) and China (615) lead the receiving offices tracked, ahead of India (377), the EPO (288), WIPO/PCT (265) and Australia (168). That spread points to a field being prosecuted in parallel across common-law and civil-law systems rather than concentrated in one jurisdiction.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to construction, civil & underground engineering patent landscape, with the prior art for and against each one.
Assignees and where their claims cluster
The ranked leaders sit well below what a concentrated field would look like, and recent-year momentum for several of the largest historical filers has already cooled.
A modest lead, not a monopoly
The top-ranked assignee holds 91 records out of 3,222 in scope, a lead built from steady filing rather than a single dominant blocking portfolio. Fifth place already drops to 26 records, and tenth place to 21.
Several historical leaders have gone quiet
Some of the assignees with the deepest historical portfolios show zero or sharply reduced filing in the latest tracked year — one large filer moved from an active pace to -100% year over year, and two Chinese universities in the ranking are down to a single filing each, off 75% and 67% respectively.
Co-filing is limited and concentrated
Only 10 co-assignee pairs appear across the dataset, with the strongest pairings reaching 11 shared records. Co-filing is not the norm in this field; most organisations prosecute independently rather than through joint ventures or shared filings.
| Assignee | Recent year | YoY |
|---|---|---|
| Ricoh Co., Ltd. | 1 | -75% |
| Shandong University | 1 | -67% |
| Sika Technology AG | 0 | -100% |
| GCP Applied Technologies Inc. | 0 | — |
| Tsinghua University | 0 | — |
| Merhi Sys | 0 | — |
| QUANTUM ENGINEERING INC | 0 | — |
| TENSAR INTERNATIONAL CORP | 0 | — |
Where to take this next
The landscape points to specific next steps depending on whether the goal is freedom-to-operate, a filing strategy, or spotting where to move first.
Map freedom-to-operate against the digital-tooling cluster
G06F, G06T and G06Q claims now overlap heavily with traditional structural filings. A freedom-to-operate check that only searches E04B/E02D structural classes will miss blocking claims sitting in the digital layer.
Explore the IPC breakdown in EurekaWatch for re-entry from quiet historical leaders
Several top-ranked assignees have pulled back sharply in the latest tracked year. A renewed filing push from any of them would signal a strategic re-entry worth tracking early.
Track assignee momentum in EurekaTest the under-claimed branches before filing broadly
Robotic site surveying, modular connection detailing and coastal monitoring show thinner filing density than the core structural clusters. A narrowly scoped novelty search there is cheaper than searching the crowded core.
Run a white-space search in EurekaCommon questions about this landscape
No single company dominates this field: the leading assignee holds 91 records out of 3,222 in scope, and the top 5 assignees combined account for only 7.6% of all records. The ranked leaders extend across 100 companies, spanning materials suppliers, universities and specialist engineering firms rather than a small blocking group. This spread means freedom-to-operate work has to check a wide set of filers rather than a handful of large portfolios.
Filing rose from 216 records in 2021 to 266 in 2024, a 23% increase over that three-year span, which is the clearest complete-year read available. The 2025 and 2026 counts look lower, but that is expected: publication lags filing by roughly 18 months, so recent years are still filling in and should not be read as a decline. On the evidence available through the last complete year, the trend is upward.
G06F (electric digital data processing) appears in 16.0% of the 3,222 records, ahead of classic structural classes like E04B building structures (12.5%) and E02D foundations (11.0%). This reflects how much of current construction-engineering filing activity centres on Building Information Modeling, site monitoring and image-based inspection systems layered onto physical structures. Any competitive review of this field now needs to search the digital classes alongside the structural ones, not instead of them.
Sub-areas with comparatively thin filing density relative to the core structural and digital clusters include robotic point-cloud site surveying, modular construction connection detailing, coastal and marine structure monitoring, and scaffolding-integrated sensor systems. These sit adjacent to the heavily filed E04B, E02D and G06F clusters but have not accumulated the same claim density. A narrow novelty search in one of these branches is a faster route to a defensible position than filing into the crowded core.
Independent filing is the norm. Only 10 co-assignee pairs appear across the full 3,222-record dataset, and the strongest of those pairings still involves just 11 shared records. Joint ventures and shared-filing structures are the exception rather than the rule in construction and civil engineering patenting, which matters when assessing whether a partner's portfolio is genuinely independent or entangled with another filer.
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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.