Cobot Impedance & Compliance Control Patent Landscape
The cobot impedance and compliance control patent space is a compact, moderately concentrated field dominated by a small number of industrial automation and robotics specialists, with Precise Automation Inc holding the leading position. Filing activity peaked in 2021 and has eased since, with China now the primary jurisdiction and the core technology class firmly centered on robotic manipulators.
Precise Automation leads a concentrated but compact field
Precise Automation Inc ranks first among all filers with 8 patent records, followed by Brooks Automation US LLC with 5 and Kuka Systems GmbH with 4. The top five applicants together account for 43% of the combined total of the hundred largest filers, indicating a moderately concentrated competitive structure within a still-small absolute corpus of 44 patent families.
A clear tier gap separates the top three applicants — Precise Automation, Brooks Automation, and Kuka Systems — from the mid-tier cluster of Intel Corp and Koninklijke Philips NV at 3 patent records each, and the remaining filers at 2 or 1. This two-tier structure is typical of a specialty control-methods field where a handful of industrial automation incumbents have built deliberate positions.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | Precise Automation Inc | 8 | |
| 2 | Brooks Automation US LLC | 5 | |
| 3 | Kuka Systems GmbH | 4 | |
| 4 | Intel Corporation | 3 | |
| 5 | Koninklijke Philips NV | 3 | |
| 6 | Shanghai Nozoli Machine Tools Technology Co. Ltd | 2 | |
| 7 | Xidian University | 2 | |
| 8 | Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences | 2 | |
| 9 | Anhui University | 2 | |
| 10 | Shanghai Aerospace Intelligent Equipment Co. Ltd | 1 |
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 11 | UNIV OF SCI & TECH BEIJING | 1 | |
| 12 | Suzhou Bosite Assembly Automation Technology Co. Ltd | 1 | |
| 13 | Shanghai Jiao Tong University | 1 | |
| 14 | Shenzhen Institute of Advanced Technology | 1 | |
| 15 | Shenyang Institute of Automation, Chinese Academy of Sciences | 1 | |
| 16 | Hebei University of Technology | 1 | |
| 17 | Wuhan University of Technology | 1 | |
| 18 | Guangzhou HKUST Fok Ying Tung Research Institute | 1 | |
| 19 | J. Schmalz GmbH | 1 | |
| 20 | HUAZHONG UNIV OF SCI & TECH | 1 |
The leaders’ positions imply that the core manipulator-control problem (B25J) is already claimed from multiple angles by established automation companies, leaving new entrants to differentiate through application-domain specificity — surgical robotics, physical therapy, or legged locomotion — or through novel control-system architectures in G05B.
Filing counts for 2024–2026 should be treated as provisional; patent applications typically take 18–24 months to publish, so recent-period totals are undercounted and the apparent drop in those years does not necessarily reflect reduced inventor activity.
A 2021 activity peak and a manipulator-centric technology mix
Two charts together tell the field’s story: an irregular filing curve that crested in 2021 and has moderated since, alongside a technology composition that is heavily weighted toward robotic manipulator control with a long tail of adjacent application branches.
Annual filing trend
Annual filing counts rose from 4 in 2017 to a peak of 8 in 2021, then fell back to 3 in each of 2022, 2023, and 2024, with 2025 showing 10 records. The 2025 figure and the single record in 2026 are almost certainly undercounted due to publication lag and should not be read as the true recent pace. The overall pattern suggests the field expanded through the early 2020s and has since settled at a lower steady-state tempo, consistent with a post-peak lifecycle stage.
↗ Hover for values · click a bar to ask EurekaTechnology composition
B25J (Manipulators and robots) accounts for 47 patent records — the clear dominant branch — with G05B (Control and regulating systems) a distant second at 9. The remaining branches each hold 3 or fewer records: A61B (Diagnosis and surgery), B25B (Hand tools and wrenches), A61H (Physical therapy and massage), B01D (Separation processes), B62D (Vehicles and legged-robot locomotion), and small counts in optical control and AI-computing branches. This long tail of sparse adjacent branches is where differentiation remains possible.
↗ 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.
Human-Robot Collaboration Workstation With A Mount…
A human-robot collaboration (HRC) workstation includes a robot having a robot controller and a robot arm comprising a plurality of joints and links connecting the joints. The joints are automatically adjusted by the controller to move or hold in space a tool or workpiece held by the robot arm by adjusting the joints. The (HRC) workstation further comprises… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Collaborative robot | 32 |
| 2 | Collaborative robot | 27 |
| 3 | Collaborative robot | 26 |
| 4 | 重组化协作机器人关节一体化驱动控制系统、方法及应用 | 23 |
| 5 | 一种用于协作机器人关节的柔顺控制方法 | 22 |
| 6 | 基于力矩传感器的协作机器人驱控一体化控制系统 | 17 |
| 7 | 一种协作机器人关节结构 | 15 |
| 8 | 一种驱控一体化控制系统 | 13 |
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 competitive structure means for R&D investment decisions
China-first jurisdiction profile shapes how an R&D team should position a new compliance-control program.
Post-peak: core manipulator control is maturing
The lifecycle stage is classified as Decline, with annual filings easing back from the 2021 peak. The core B25J manipulator-control problem has attracted the bulk of prior art, and the window for broad foundational claims in that space is narrowing. New programs are better positioned around underserved application domains or novel control-system architectures than around re-solving the core compliance problem.
Lifecycle · Post-peakTop five hold 43% of the leading-filers’ total
The top five filers account for 43% of the combined patent records of the hundred largest filers, led by Precise Automation Inc at 8 records. This is a moderately concentrated field by patent-landscape standards, but the absolute corpus of 44 patent families is small enough that a focused filing campaign of even 5–8 well-scoped patents could meaningfully alter the competitive balance. The tier gap below the top three also leaves room for a challenger to move up.
Concentration · ModerateMinimal co-filing: one active pair identified
Only one co-applicant pair is in evidence — Suzhou Bosite Assembly Automation Technology Co. Ltd and Shanghai Aerospace Intelligent Equipment Co. Ltd, with a single jointly filed patent record. This near-absence of formal collaboration signals that the field is driven by proprietary, single-assignee development rather than consortium or academic-industry partnerships, which may create white space for a well-networked entrant willing to co-develop with a university or clinical partner.
Collaboration · SparseChina leads on volume; the US holds the strongest individual filer
China is the primary filing jurisdiction with 26 patent records, followed by the United States with 14, WIPO (PCT) with 5, Europe (EPO) with 2, and Canada with 1. Despite China’s volume lead, the top-ranked individual applicant — Precise Automation Inc — files primarily in the United States. PCT filings are modest, suggesting many players are not yet pursuing broad multi-jurisdictional protection, which may leave coverage gaps in key manufacturing markets.
Geography · China-firstGo 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 |
|---|---|---|
| Suzhou Bosite Assembly Automation Technology Co. Ltd | Shanghai Aerospace Intelligent Equipment Co. Ltd | 1 |
Co-filing pairs, ranked by the number of jointly-filed patent families.
Precise Automation leads; Kuka and Philips define adjacent specialty routes
The top two applicants are established US-headquartered automation firms with deep B25J manipulator-control portfolios, while European players Kuka Systems and Philips occupy narrower but strategically distinct application niches.
Precise Automation Inc
Precise Automation leads the field with 8 patent records, concentrated in B25J 9 (manipulator program control) and B25J 13 (hand-guidance and force-sensing), alongside G05B 19 (numerical control systems). This breadth across manipulator mechanics and control architecture makes it the most cross-cutting portfolio in the corpus. No momentum data is available for this applicant in the recent window, so trajectory must be inferred from its established position rather than a confirmed filing acceleration.
patent records: 8Kuka Systems GmbH
Kuka Systems GmbH holds 4 patent records, with emphasis on B25J 9 (manipulator control), and a notable secondary focus on B25B 1 and B25B 11 — hand-tools and clamping, suggesting compliance-control applied to assembly and fixturing rather than free-space motion. This application-domain specificity distinguishes Kuka’s position from Precise Automation’s more generalist portfolio. Koninklijke Philips NV, at 3 patent records, presents a third distinct route via A61B 34 and A61B 90, anchoring compliance control in computer-assisted surgery.
patent records: 4| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| Intel Corporation | 2 | ▲ new entrant |
| Xidian University | 1 | ▲ new entrant |
| Anhui University | 2 | ▲ new entrant |
Under-served branches adjacent to the core manipulator space
Several IPC branches appear in the corpus at very low counts relative to the dominant B25J class. These sparse branches are observations of relative under-coverage; where they also carry plausible technical value and a realistic entry path, they warrant closer evaluation.
A61B · Surgical robotics compliance
A61B (Diagnosis and surgery) holds 3 patent records — just 4% of the IPC distribution — despite surgical cobots being an active commercial segment. Koninklijke Philips NV accounts for much of this coverage, leaving room for medical-device specialists or surgical-robot startups to build differentiated positions in force-controlled tissue interaction. The entry path is technically demanding (regulatory burden, sterile-field constraints) but the competitive density in this branch is low relative to the clinical opportunity.
Search this in Eureka →A61H · Physical therapy and rehabilitation robotics
A61H (Physical therapy and massage) carries only 1 patent record in this corpus — 1% of the IPC distribution — making it the sparsest branch with an identifiable clinical application. Compliance control is a core technical requirement for safe patient-interactive rehabilitation devices, yet almost no filing activity targets this application explicitly. An organization combining rehabilitation robotics hardware with a compliance-control software stack could establish an early position in a branch that larger industrial-robot players have largely overlooked.
Search this in Eureka →How leading applicants differ across technology routes
Route coverage across the main technology branches in the current evidence set.
| Player | B25J 9 · Manipulators & robots | B25J 13 · Manipulators & robots | B25J 19 · Manipulators & robots | G05B 19 · Control & regulating systems | B25J 17 · Manipulators & robots |
|---|---|---|---|---|---|
| Precise Automation Inc | Strong · 8 | Strong · 5 | Moderate · 3 | Strong · 5 | Absent |
| Kuka Systems GmbH | Strong · 4 | Moderate · 2 | Moderate · 2 | Absent | Absent |
| Koninklijke Philips NV | Strong · 3 | Moderate · 1 | Absent | Strong · 2 | Absent |
| Intel Corporation | Strong · 3 | Absent | Moderate · 1 | Absent | Absent |
| Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences | Strong · 3 | Absent | Absent | Absent | Absent |
| Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences | Strong · 2 | Absent | Absent | Absent | Absent |
| Anhui University | Strong · 2 | Absent | Absent | Absent | Absent |
Frequently asked questions
The analysis covers 44 patent families in scope. The applicant ranking is based on patent records, so individual applicant counts reflect all jurisdictional filings associated with their activity in this area.
Precise Automation Inc leads with 8 patent records, followed by Brooks Automation US LLC with 5 and Kuka Systems GmbH with 4. These three form a clear top tier separated from the remaining applicants.
The field is classified as Decline, with annual filings easing back from a peak in 2021. This does not mean the technology is obsolete; it indicates that the initial wave of foundational patent activity has passed and the field is consolidating.
China leads with 26 patent records, followed by the United States with 14. WIPO (PCT) accounts for 5 records, Europe (EPO) for 2, and Canada for 1. PCT coverage is modest, suggesting many applicants have not yet sought broad multi-jurisdictional protection.
The five sparsest branches are A61B (Diagnosis and surgery) at 3 records, B25B (Hand tools and wrenches) at 2, and A61H (Physical therapy), B01D (Separation processes), and B62D (Vehicles and legged-robot locomotion) at 1 record each. A61B and A61H stand out because compliance control is technically central to their applications yet patent coverage is thin.
Yes. Intel Corp (filing as the Chinese entity), Xidian University, and Anhui University are each identified as new entrants in the most recent filing window, each with recent filings marking their first activity in this specific field. These entries signal that academic institutions and technology-company diversifiers are beginning to explore compliance-control methods, though their current record counts are small.
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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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