Cobot Reliability / MTBF Patent Snapshot 2026
The cobot reliability and MTBF patent space is small and fragmented, with 28 patent families spread across roughly twenty filers, led by Rethink Robotics GmbH at 4 families. Activity peaked in 2021 and annual volume has eased since, signalling a field that reached an early crest but has not yet attracted sustained, large-scale investment.
Rethink Robotics leads a highly fragmented field
Rethink Robotics GmbH holds the top position with 4 patent families, followed by Shenzhen Hans Robot, Zhongminggu Intelligent Robot (Guangdong), and Changzhou Jingsheng Automation Tech, each with 2 families. The remaining ranked applicants each hold a single family.
The top five filers account for 39% of the ranked applicants visible in this query’ combined total, a relatively low concentration figure that confirms no single incumbent has achieved a visible lock on the space. The field is best described as an open, multi-player contest rather than a duopoly.
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 1 | Rethink Robotics GmbH | 4 | |
| 2 | Shenzhen Hans Robot Co., Ltd. | 2 | |
| 3 | Zhongminggu Intelligent Robot (Guangdong) Co., Ltd. | 2 | |
| 4 | Changzhou Jingsheng Automation Tech | 2 | |
| 5 | Suzhou Huiweiting Intelligent Technology Co., Ltd. | 1 | |
| 6 | Jiangsu Yangtian Robot Technology Co., Ltd. | 1 | |
| 7 | Shanghai Jieka Robot Technology Co., Ltd. | 1 | |
| 8 | Shenzhen Tongchuan Technology Co., Ltd. | 1 | |
| 9 | Jiangsu Jingsheng Automation Technology Co., Ltd. | 1 | |
| 10 | Jiangsu Weiliank Robot Technology Co., Ltd. | 1 |
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 11 | Shandong Hengchuang Intelligent Equipment Co., Ltd. | 1 | |
| 12 | Chengdu CRP Robot Technology Co., Ltd. | 1 | |
| 13 | Suzhou Qisong Precision Components Co., Ltd. | 1 | |
| 14 | Shenzhen Yuejiang Technology Co., Ltd. | 1 | |
| 15 | Zhejiang University | 1 | |
| 16 | Shenzhen Tuofu Robot Co., Ltd. | 1 | |
| 17 | Beijing Tsinew Technology Co., Ltd. | 1 | |
| 18 | Jingke (Shenzhen) Robot Technology Co., Ltd. | 1 | |
| 19 | Hubei Zhongda Intelligent Parking Equipment Co., Ltd. | 1 | |
| 20 | Beiske (Tianjin) Intelligent Technology Co., Ltd. | 1 |
Rethink Robotics GmbH’s lead position is notable given its European origin in a corpus where Chinese filings are visible in; it suggests that Western reliability-engineering know-how has found a measurable, if modest, foothold. The tier of 2-family filers represents immediate challengers rather than distant followers.
Patent records filed in the most recent 18–24 months are subject to publication lag and likely under-represent current activity; figures for 2024–2026 should be read as preliminary. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
A 2021 peak followed by easing volume, dominated by manipulator-class IP
Two charts frame the field’s trajectory and technical composition: the annual filing trend reveals when activity surged and how it has since moderated, while the IPC branch breakdown shows where technical effort is concentrated and where adjacent claims remain sparse.
Annual filing trend
Filings were negligible before 2018, built gradually through 2020, then surged to a 7-family peak in 2021 before retreating to 3–4 families per year in subsequent periods. The 2024 and 2026 bars reflect publication lag and should not be read as definitive. The overall multi-year window shows a field that activated quickly but has not sustained its peak pace.
↗ Hover for values · click a bar to ask EurekaTechnology composition
B25J (Manipulators and robots) is visible in with 28 records, confirming that virtually all cobot reliability IP is filed under the core manipulator class. Adjacent branches — including C30B (Crystal growth), A61H (Physical therapy and massage), B33Y (Additive manufacturing), B65G (Conveying and material handling), F16D (Clutches and brakes), F16H (Gearing and transmissions), and H02G (Power and signal cables) — each carry only 1–2 records, illustrating how thinly technical effort is spread beyond the primary class.
↗ 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.
Joint of Collaborative Robot, and Housing Therefor
A housing of a joint of a collaborative robot, where at least part of the material of the housing is configured to include a plurality of lattice structure units. Since the at least part of the material of the housing is configured to include the plurality of lattice structure units, the weight of the joint may be reduced with respect to a completely solid… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Self-adaptive identification method for nonlinear … | 9 |
| 2 | 一种用于协作机器人的天吊行走轴 | 6 |
| 3 | 协作机器人用管线系统 | 5 |
| 4 | 协作机器人系统和协作机器人监测方法 | 4 |
| 5 | 协作机器人抱闸控制装置及其控制方法 | 4 |
| 6 | 一种六轴轻型协作机器人 | 3 |
| 7 | 一种协作机器人电磁制动结构 | 2 |
| 8 | 集成于协作机器人的快换式异构末端执行器及其控制方法 | 1 |
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.
Assignee snapshot from the current evidence set
The applicants below are visible in this query result. Because the evidence set is relatively small, read this section as a directional snapshot rather than a full competitive ranking.
Rethink Robotics GmbH
The corpus leader with 4 patent families, Rethink Robotics GmbH concentrates its portfolio squarely in B25J — specifically sub-classes covering manipulator control (B25J9), joint and arm structures (B25J17), and safety and sensing systems (B25J19). As the only non-Chinese filer in the top tier, its position reflects a Western engineering focus on systematic MTBF and fault-tolerance architecture. No momentum trend data is available for this applicant, but its established family count gives it a first-mover advantage in the Western jurisdictions where it has filed (US and EPO).
4 patent familiesGuangdong Huayan Robot Co.
Guangdong Huayan Robot is a new entrant with 2 recent patent families, marking a trend described as a new entrant surge in the applicant momentum data. Its technical focus spans B25J19 (safety and sensing), B25J9 (manipulator control), and notably F16D121 (clutches and brakes) — the last being one of the sparsest branches in the corpus and suggesting an intent to claim reliability at the mechanical drivetrain level. This cross-branch positioning, if sustained, could differentiate it from the majority of filers who cluster entirely within B25J.
2 patent familiesFrequently asked questions
The evidence covers 28 patent families in scope. The corpus is small, reflecting an early-stage and still-developing area of focused IP activity within the broader collaborative robotics field.
Rethink Robotics GmbH leads with 4 patent families, followed by Shenzhen Hans Robot Co. Ltd., Zhongminggu Intelligent Robot (Guangdong), and Changzhou Jingsheng Automation Tech, each with 2 families.
The lifecycle evidence places the field in a decline phase, with annual filings easing back from a 2021 peak of 7 families and a recent-window growth rate of -46%. Publication lag means the most recent periods (2024–2026) are likely under-counted, so the true current rate may differ.
China is visible in with 23 jurisdiction-level records, followed by the United States with 3 and the EPO with 2. Freedom-to-operate in US and European markets is therefore relatively less constrained by existing filings in this specific topic.
B25J (Manipulators and robots) covers all 28 records, making it the overwhelmingly visible class. Adjacent classes such as F16D (Clutches and brakes), F16H (Gearing and transmissions), and B33Y (Additive manufacturing) each appear in only 1 record, indicating sparse adjacent coverage.
The applicant momentum data flags two new entrants: Guangdong Huayan Robot Co. and Jaka Robotics Co., Ltd. (Jieka Robot), both of which recorded recent filings with no prior-period baseline — signalling fresh strategic interest from Chinese manufacturers in formalizing reliability-related IP.
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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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