Industrial Robot Arm Force and Tactile Sensing Patents
The field has reached maturity with 3,808 patent families on record, led by surgical robotics firms rather than traditional industrial-robot makers — Intuitive Surgical Operations Inc alone holds the top position. Annual volume peaked in 2022 and has since eased, while the United States remains the dominant filing jurisdiction by a wide margin.
Surgical and industrial leaders share the top tier, with Intuitive Surgical setting the pace
Intuitive Surgical Operations Inc leads the ranking with 237 patent families, followed closely by Seiko Epson Corp (200) and CMR Surgical Ltd (164). The top five applicants — Intuitive Surgical, Seiko Epson, CMR Surgical, Auris Health, and ABB (Schweiz) AG — together account for 26% of the combined output of the hundred largest filers.
The top tier is divided between surgical-robotics specialists (Intuitive Surgical, CMR Surgical, Auris Health) and precision-motion or industrial-robot houses (Seiko Epson, ABB). A secondary cluster from rank 6 to 10 — Canon, Fanuc, Mako Surgical, Kawasaki, and KUKA — adds depth but sits noticeably below the leaders in volume, indicating a moderate concentration with a meaningful gap between the first and second tiers.
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 1 | Intuitive Surgical Operations Inc | 237 | |
| 2 | Seiko Epson Corporation | 200 | |
| 3 | CMR Surgical Ltd | 164 | |
| 4 | Auris Health Inc | 159 | |
| 5 | ABB (Schweiz) AG | 137 | |
| 6 | Canon Inc | 108 | |
| 7 | Fanuc Ltd | 106 | |
| 8 | Mako Surgical Corp | 90 | |
| 9 | Kawasaki Heavy Industries Ltd | 87 | |
| 10 | KUKA Deutschland GmbH | 81 |
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 11 | Dexterity Inc | 81 | |
| 12 | Mitsubishi Electric Corporation | 78 | |
| 13 | European Atomic Energy Community (Euratom) | 78 | |
| 14 | Panasonic Holdings Corporation | 77 | |
| 15 | Toyota Motor Corporation | 68 | |
| 16 | Yaskawa Electric Corporation | 64 | |
| 17 | Toshiba Corporation | 62 | |
| 18 | Sony Group Corporation | 56 | |
| 19 | Cognibotics AB | 54 | |
| 20 | Stryker Corporation | 49 |
Intuitive Surgical’s dominant position, combined with a strong surgical-robotics cohort in the top five, signals that medical-robotic applications have driven much of the high-value IP development in this space. Industrial-robot specialists must either build around existing surgical IP or focus on distinctly industrial force-control sub-domains to avoid congested claim space.
Patent publications typically lag filings by 18–24 months, so the apparent decline in 2023–2026 data reflects incomplete publication rather than a real contraction. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
A 2022 volume peak and a manipulator-dominated technology mix define the field’s current shape
The annual filing chart reveals sustained growth from 2017 to 2022 followed by an easing from peak, while the IPC composition chart shows that robotic-manipulator patents (B25J) form the overwhelming plurality, with surgical, control, and force-measurement classes well behind.
Annual filing trend
Filings climbed steadily from 2017 through a 2022 peak of 513 families, then softened in 2023 and 2024. The 2025 and 2026 bars are heavily truncated by publication lag and do not reflect final-year totals. The multi-year trajectory remains expansionary relative to the 2017 baseline.
↗ Hover for values · click a bar to ask EurekaTechnology composition
B25J (Manipulators & robots) dominates the IPC mix by a large margin, confirming that most force-and-tactile IP is anchored in manipulator hardware and kinematics. A61B (Diagnosis & surgery) is the second-largest branch, reflecting the outsized surgical-robotics presence among top filers. G05B (Control & regulating systems), G06F (digital data processing), and G01L (force & pressure measurement) form a meaningful but smaller secondary tier, indicating that sensing algorithms and control integration remain comparatively less patented relative to physical hardware.
↗ 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.
Contact force compensation in a robot manipulator
A robotic manipulator is attachable to a proximal end of a medical instrument. A processor linked to the manipulator transmits control signals to the manipulator to cause the manipulator to displace the medical instrument to achieve a desired position and orientation of the medical instrument. A contact force sensor is disposed on the medical instrument and… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Image-directed robotic system for precise robotic … | 2,374 |
| 2 | Apparatus and method for performing computer enhan… | 2,059 |
| 3 | Methods and devices for positioning a surgical ins… | 1,712 |
| 4 | Image-directed robotic system for precise robotic … | 1,601 |
| 5 | Endoscopic surgical instrument and method for use | 1,304 |
| 6 | Signaling device and method for monitoring positio… | 1,201 |
| 7 | Force and torque sensing in a surgical robot setup… | 1,183 |
| 8 | System for controlling articulation forces | 1,103 |
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
The combination of a maturing filing curve, a surgical-robotics-heavy leadership group, and a concentrated but not monopolized top tier shapes where new entrants can find differentiated positioning.
Field has plateaued near its peak; incremental volume gains are diminishing
Annual filings reached their highest point in 2022 and have since eased, placing the field in a maturity stage. New entrants face a densely populated claim landscape in core B25J manipulator and A61B surgical classes. R&D investment is better targeted at adjacent or under-claimed sub-domains than at replicating the core hardware approaches already crowded by the top 20 filers.
Lifecycle: MaturityModerate concentration with a clear surgical-robotics cluster at the top
The top five filers hold 26% of the combined output of the hundred largest filers, a moderate level that leaves room for challengers. The leader gap between Intuitive Surgical (237 patent families) and the fifth-placed ABB (137) is meaningful but not insurmountable. Industrial-robot companies occupying ranks 5–10 represent the most active competing cluster outside surgical robotics.
Concentration: ModerateAuris Health and Verb Surgical are the only identified co-filing pair
Evidence shows a single confirmed co-applicant relationship: Auris Health Inc and Verb Surgical Inc filed together on 6 patent families. This very limited co-filing activity suggests that most players are protecting force-and-tactile IP independently, which may reflect the competitive sensitivity of sensor integration know-how. Broader ecosystem co-development is not visible in current evidence.
Collaboration: LimitedUS-centric filings with meaningful European and growing Asian presence
The United States is the primary filing destination, followed by Europe (EPO) and China. Japan and India also feature, reflecting the home-market strategies of Japanese industrial-robot OEMs and emerging Indian filings. South Korea and Germany appear but at comparatively lower volumes. An applicant seeking broad commercial protection should prioritize US, EPO, China, and Japan coverage as the four core jurisdictions.
Geography: US-ledGo 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 |
|---|---|---|
| Auris Health Inc | Verb Surgical Inc | 6 |
Co-filing pairs, ranked by the number of jointly-filed patent families.
Intuitive Surgical extends its lead while Seiko Epson’s volume has sharply contracted
The top two filers illustrate divergent trajectories: Intuitive Surgical is accelerating, while Seiko Epson has seen a steep recent-period decline. Their technology emphases are also distinct — surgical-control versus pure industrial manipulator IP.
Intuitive Surgical Operations Inc
With 237 patent families and a recent filing trend of +33%, Intuitive Surgical is the only top-five filer showing clear growth momentum. Its technology focus is anchored in A61B 34 (surgical diagnosis & surgery), B25J 9 (manipulators & robots), and A61B 90, confirming a surgical-robotic-arm specialization. This combination of volume leadership and positive momentum makes it the most formidable incumbent to design around.
families: 237Seiko Epson Corp
Seiko Epson holds 200 patent families — second overall — but its recent filing trend is –69%, the sharpest contraction among major filers. Its portfolio is concentrated entirely in B25J classes (manipulators, control, accessories), reflecting a precision industrial-robot strategy with no surgical overlay. The volume pullback may signal a portfolio consolidation or strategic pivot, creating a potential gap in the industrial-arm force-control space it previously occupied.
families: 200| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| Intuitive Surgical Operations Inc | 57 | ▲ +33% |
| Seiko Epson Corporation | 26 | ▼ -69% |
| CMR Surgical Ltd | 44 | ▼ -14% |
| ABB (Schweiz) AG | 30 | ▼ -23% |
| Fanuc Ltd | 4 | ▼ -89% |
| Canon Inc | 3 | ▼ -75% |
Control systems, force measurement, and data processing remain under-served relative to hardware
While B25J hardware claims dominate the corpus, several adjacent IPC branches show comparatively sparse coverage despite clear technical relevance to advanced force-and-tactile sensing applications.
G01L · Force & pressure measurement
G01L accounts for only 4% of IPC branch records in the corpus despite being the most directly relevant class for dedicated force and tactile sensor design. Applicants focusing on novel transducer architectures, multi-axis force/torque sensors, or flexible tactile arrays would find this branch comparatively sparse. Entry could combine sensor physics innovation with manipulation-context claims to build a defensible position adjacent to the crowded B25J hardware space.
Search this in Eureka →G05B · Control & regulating systems
G05B represents 6% of branch records, suggesting that closed-loop force-control algorithms — including impedance control, admittance control, and learned compliance — are less densely patented than the physical hardware they govern. As robot intelligence shifts toward adaptive force regulation and reinforcement-learning-based contact management, this branch offers a plausible entry path for software-forward applicants or AI-focused R&D teams seeking to complement rather than replicate existing hardware IP.
Search this in Eureka →How the top filers differ by technology route across manipulator, surgical, and control classes
Route coverage across the main technology branches in the current evidence set.
| Player | B25J 9 · Manipulators & robots | B25J 13 · Manipulators & robots | A61B 34 · Diagnosis & surgery | B25J 19 · Manipulators & robots | B25J 15 · Manipulators & robots |
|---|---|---|---|---|---|
| Intuitive Surgical Operations Inc | Strong · 159 | Moderate · 63 | Strong · 182 | Absent | Absent |
| Seiko Epson Corporation | Strong · 168 | Strong · 96 | Absent | Moderate · 48 | Emerging · 12 |
| CMR Surgical Ltd | Strong · 109 | Absent | Strong · 95 | Absent | Absent |
| Verb Surgical Inc | Strong · 80 | Absent | Strong · 87 | Absent | Emerging · 11 |
| Fanuc Ltd | Strong · 77 | Strong · 56 | Absent | Strong · 42 | Absent |
| Auris Health Inc | Strong · 78 | Absent | Strong · 89 | Absent | Absent |
Frequently asked questions
The corpus contains 3,808 patent families, representing a broad body of IP spanning manipulator hardware, surgical robotic applications, force-control algorithms, and sensing sub-systems.
Intuitive Surgical Operations Inc leads with 237 patent families, ahead of Seiko Epson Corp (200) and CMR Surgical Ltd (164). Notably, the top filers include multiple surgical-robotics companies alongside traditional industrial-robot manufacturers.
The field reached its annual filing peak in 2022 and has since eased, placing it in a maturity stage. Multi-year volume is still well above the 2017 baseline, but annual growth is no longer accelerating. The 2025 and 2026 data are heavily affected by publication lag and should not be read as final counts.
The United States is by far the primary jurisdiction, followed by Europe (EPO), China, WIPO (PCT), and Japan. An applicant seeking broad commercial protection should treat these five as the core filing geography. India and Canada also appear at meaningful volume.
Evidence shows one confirmed co-applicant relationship: Auris Health Inc and Verb Surgical Inc co-filed on 6 patent families. Beyond this pair, co-filing activity is not visible in current evidence, suggesting most players are developing force-and-tactile IP independently.
G01L (force & pressure measurement) and G05B (control & regulating systems) are comparatively sparse relative to their technical relevance, each representing around 4–6% of branch records despite being central to advanced sensing and closed-loop force control. G06F (digital data processing) and G05D (control of non-electric variables) are even smaller and may offer entry points for software-forward applicants.
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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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