開口 (JP Patent Analysis Report)
The Technical Field "開口" had 9,357 patent application filings in the most recent period (2024-01-01 to 2024-07-31). This is a significantly decreased of -2,521 filings (-21.2%) over 11,878 they had in the same period of the previous year (2023-01-01 to 2023-07-31). This report also includes technical terms related to " 開き口 ", " 開孔 ", " 開穴 " in the search set.
The highest number of filings in 2021 with 24,775 cases, and their lowest number in 2024 with 12,437 cases.
The mean of the number of filings over the last 5 years (2020 to 2025, 107,682 cases in total) is 17,947, and the median is 21,177. The coefficient of variation (standard deviation/mean) is 0.5, and there have been big fluctuations in the number of filings from year to year.
| Index | Value |
|---|---|
| Average | 17,947 patents |
| Std Dev | 8,608 |
| COV | 0.5 |
| Year | Cases | YOY |
|---|---|---|
| 2024 year | 12,437 cases | -38.2 % |
| 2023 year | 20,119 cases | -9.52 % |
| 2022 year | 22,235 cases | -10.25 % |
This report provides the latest patent analysis information (the IP landscape, including a patent map) on the patent search results of the JP patent database for 開口 for the period of the last 5 years (2021-01-01 to 2026-03-31). You can compare the information in this report with the trends in your competitors’ patent filings and technologies, and use it to search for important patents.
This service provides, free of charge, a patent analysis report based on the latest patent data (Japanese, U.S., European, and PCT application publications) for use in patent searches, patent analysis, and IP landscaping. The service is offered by "Patent Integration" a firm specializing in patent search/patent analysis.
This report includes basic information to help you understand the IP strategy and management of 開口, such as changes in the number of patents/patent applications they have filed, comparisons of the numbers of patents/patent applications filed by their peers and competitors, their top coapplicants (joint research partners, alliance partners), and their most important patents. It can be used in various intellectual property business operations such as IP landscaping, patent search/patent analysis, preparation of intellectual property business evaluation reports, selection of M&A candidates, and selection of alliance partners.
He is a patent attorney at a patent office. He specializes in invention counseling, patent filing, and intellectual property strategies for start-up companies and new businesses in the fields of software, information technology and artificial intelligence. He runs a patent course for beginners on Udemy, an online course provider.
After studying physics at the University of Tokyo as a doctoral student, he was engaged in intellectual property analysis and technology trend research as an in-house patent attorney at a precision equipment manufacturer and at Toyota Central R&D Labs. Inc..
Introduction
The concept of the "IP landscape" (IPL) has been attracting attention recently.
An IP landscape is not limited to patent information, but also integrates and analyzes business information (e.g., non-patent information such as papers, news releases, stock information, and market information). Intellectual-property-based business management is realized through the analysis of intellectual property information applied to the formulation of management strategies and business strategies. This is a comprehensive approach that includes but not limited to planning of open and closed strategies, selecting M&A candidates, searching for alliance partners, and formulating intellectual property strategies, through the exploitation of intellectual property information.
IP landscaping usually includes patent search and patent analysis. In patent search and patent analysis, it is important to grasp the market position of each company and the overall technological trends and development trends for each technology. More specifically, it is important to understand what intellectual property your own company and other companies hold, what the strengths and weaknesses of other companies are, and how other companies are trying to exploit their intellectual property. In other words, it is important to understand both the business strategy and the intellectual property strategy of each company.
After reading this search report, you may be interested in more detailed patent searches and patent analysis. We offer a service called Patent Integration, which is an integrated patent search and patent analysis service. With reasonable pricing and a simple user interface such that even beginners can quickly search for and analyze patent information by company or technology from a web browser, please consider using it for detailed patent searches, patent analysis, and IP landscaping.
Patent Integration has a patent-landscaping function that can visually represent a set of tens of thousands of patents/patent applications. This allows you to convincingly show the technical positions of your company and its competitors to your management and business strategists in order to formulate management strategies and business strategies.
開口, Changes in the Number of JP Patents/Patent Applications
The changes in the number of patent filings of 開口 over the last 20 years (JP) are shown below.
The change in the number of patents/patent applications is the most basic index in patent analysis. By examining the change in the number of patents/patent applications, you can see the status of technological development and R&D focus for each company or technology. It should be noted that since there is a one and a half year lag between the filing and the laying open of patent applications, it is not possible to analyze the situation more recently than one and half years prior to the present.
In this report, you can only see the change in the number of patents/patent applications by company or technology, whereas Patent Integration allows you to quickly compare the number of patent applications with your competitors in each technical field by cross-referencing with other keywords and patent classifications.
Search Set (Analysis Patents)
This patent analysis report was created for a patent search set of 81,092 cases retrieved by applying the following search formula and analysis period to the following patent database. Patent information such as a patent analysis result, a patent map, and a patent landscape can be freely used for patent searches, analysis, and work on intellectual property strategies, including IP landscaping.
開口
Same industry / competition company information (JP)
The number of patents and changes in the number of patents of other companies (competitors) in the same industry as 開口 are shown below.
Comparison of changes in the number of patents with peers and competitors is an important analytical index for understanding the intellectual property strategies of each company. By checking the transition of the number of patents for each company / competitor, you can check the status of focus on technology development and R&D for each company / technology.
It should be noted that patents have a time lag of one and a half years from filing to publication, so it is not possible to analyze the situation more recent than one and a half years.
If you want to find out more information, " Patent Integration , You can compare the number of patent applications with competitors in each technical field in a short time by multiplying with other keywords and patent classifications.Please use it for more detailed patent information analysis such as selection of M&A candidate destinations and alliance destinations.
Trends in filing of joint patent applications in the last 3 years (2024 to 2026).
Comparing the number of applications of each company, 三菱電機株式会社 has the highest number of joint applications in the last in the last 3 years (2024 to 2026) with 150 cases, followed by 株式会社東芝 with 77 cases.
| Name | Cases |
|---|---|
| 三菱電機株式会社 | 150 cases |
| 株式会社東芝 | 77 cases |
| パナソニックホールディングス株式会社 | 3 cases |
Trends in filing of joint patent applications for the target period (2021 to 2026).
Comparing the number of applications of each company, 三菱電機株式会社 has the highest number of joint applications in the last for the target period (2021 to 2026) with 917 cases, followed by 株式会社東芝 with 381 cases.
| Name | Cases |
|---|---|
| 三菱電機株式会社 | 917 cases |
| 株式会社東芝 | 381 cases |
| パナソニックホールディングス株式会社 | 67 cases |
Same industry / competition company, Change in the Number of JP Patents
Below is a patent map showing changes in the number of applications for JP patents of 3 companies in the same industry over the past 20 years.
Top company information (JP)
The number of patents and changes in the number of patents of other companies (competitors) in the same industry as 開口 are shown below.
Comparison of changes in the number of patents with peers and competitors is an important analytical index for understanding the intellectual property strategies of each company. By checking the transition of the number of patents for each company / competitor, you can check the status of focus on technology development and R&D for each company / technology.
It should be noted that patents have a time lag of one and a half years from filing to publication, so it is not possible to analyze the situation more recent than one and a half years.
If you want to find out more information, " Patent Integration , You can compare the number of patent applications with competitors in each technical field in a short time by multiplying with other keywords and patent classifications.Please use it for more detailed patent information analysis such as selection of M&A candidate destinations and alliance destinations.
Trends in filing of joint patent applications in the last 3 years (2024 to 2026).
Among the top coapplicants, 三菱電機株式会社 has the highest number of joint applications in the last in the last 3 years (2024 to 2026) with 150 cases, followed by 株式会社東芝 with 77 cases.
| Name | Cases |
|---|---|
| 三菱電機株式会社 | 150 cases |
| 株式会社東芝 | 77 cases |
| パナソニックホールディングス株式会社 | 3 cases |
Trends in filing of joint patent applications for the target period (2021 to 2026).
Among the top coapplicants, 三菱電機株式会社 has the highest number of joint applications in the last for the target period (2021 to 2026) with 917 cases, followed by 株式会社東芝 with 381 cases.
| Name | Cases |
|---|---|
| 三菱電機株式会社 | 917 cases |
| 株式会社東芝 | 381 cases |
| パナソニックホールディングス株式会社 | 67 cases |
Top company, Change in the Number of JP Patents
Below is a ranking of the number of JP patent applications by 開口’s top 3 coapplicants over the last 20 years.
Below is a patent map showing the changes in the numbers of JP patent filings by 開口’s top 3 coapplicants over the last 20 years.
Top company Details (JP)
Trends in filing of joint patent applications with パナソニックホールディングス株式会社
開口 filed 67 joint applications with パナソニックホールディングス株式会社 for the analysis period (2021 to 2026).
The mean of the number of filings over the last 5 years (2020 to 2025, 107 cases in total) is 17.8, and the median is 17.5. The coefficient of variation (standard deviation/mean) is 0.8, and there have been relatively large fluctuations in the number of filings from year to year.
The highest number of filings in 2021 with 29 cases, and their lowest number in 2024 with 3 cases.
| Index | Value |
|---|---|
| Average | 17.8 patents |
| Std Dev | 14.7 |
| COV | 0.8 |
| Year | Cases | YOY |
|---|---|---|
| 2024 year | 3 cases | -66.7 % |
| 2023 year | 9 cases | -65.4 % |
| 2022 year | 26 cases | -10.34 % |
Trends in filing of joint patent applications with 株式会社東芝
開口 filed 381 joint applications with 株式会社東芝 for the analysis period (2021 to 2026).
The mean of the number of filings over the last 5 years (2020 to 2025, 479 cases in total) is 79.8, and the median is 93.5. The coefficient of variation (standard deviation/mean) is 0.5, and there have been big fluctuations in the number of filings from year to year.
The number of filings has been decreasing for the last 3 years (2022 to 2025). The highest number of filings in 2023 with 117 cases, and their lowest number in 2024 with 75 cases.
| Index | Value |
|---|---|
| Average | 79.8 patents |
| Std Dev | 36.9 |
| COV | 0.5 |
| Year | Cases | YOY |
|---|---|---|
| 2024 year | 75 cases | -35.9 % |
| 2023 year | 117 cases | +25.81 % |
| 2022 year | 93 cases | -1.06 % |
Trends in filing of joint patent applications with 三菱電機株式会社
開口 filed 917 joint applications with 三菱電機株式会社 for the analysis period (2021 to 2026).
The mean of the number of filings over the last 5 years (2020 to 2025, 1,286 cases in total) is 214, and the median is 212. The coefficient of variation (standard deviation/mean) is 0.6, and there have been big fluctuations in the number of filings from year to year.
The highest number of filings in 2021 with 344 cases, and their lowest number in 2024 with 138 cases.
| Index | Value |
|---|---|
| Average | 214 patents |
| Std Dev | 122 |
| COV | 0.6 |
| Year | Cases | YOY |
|---|---|---|
| 2024 year | 138 cases | -21.59 % |
| 2023 year | 176 cases | -28.74 % |
| 2022 year | 247 cases | -28.20 % |
Information on important patents (JP)
The following shows JP patents held by 開口 that have had an invalidation trial against them demanded or an opposition filed against them by a third party, and 開口’s JP patents/patent applications of high importance cited by Examiners in patent examination processes.
By noting the most important patents, you can obtain knowledge of the competitive business environment in which 開口 is placed (e.g., whether it is a fiercely competitive environment or an oligopolistic market and the like). In general, it can be understood that a company with a large number of demands for invalidation trials is developing their business in a business environment where IP disputes are common.
If you want to search for more detailed information, you can use Patent Integration to retrieve and download by company cited patents/patent applications or patents undergoing invalidation trials. You can quickly extract important patents from a patent set that includes multiple competitors by cross-referencing with other keywords and patent classifications. Please consider using it for searches for important patents/patent applications.
Glossary
- Cited
- Indicates that the patent/patent application has been cited (by Examiners) in notices of reasons for rejection in the examination process of other (Japanese, U.S., or European) patent applications. The higher the number of citations, the more important the patent/patent application is considered to be.
- Request for invalidation trial
- Indicates that a third party has requested a procedure to invalidate the patent. It is likely to affect the business of third parties and is considered to be of high importance.
- Opposition
- Indicates that a third party has filed a petition with the Patent Office to hear the validity of the patent again. Like the trial for invalidation, it is considered to be of high importance.
- Information provision
- Indicates that a third party has provided the Patent Office with useful information for examination for the patent filed. It is usually considered to be of high importance because it is done to prevent the patent from being granted.
- Browsing request
- Indicates that a third party has requested the Patent Office to view the patent bag (a set of documents exchanged between the Patent Office and the applicant). The bag is often checked prior to trial for invalidation, opposition, and provision of information, and is considered to be a highly important patent.
Invalidationed Trial cases
List of latest Invalidationed Trial patents
In the last 3 years (2023-04-01 ~ 2026-03-31), there were 42 patents Invalidation Trial from third parties. The average number of Invalidation Trial is 1.3 times. The most recently Invalidation Trial patent is 特許7239774 "排水部材及び雨樋" (Invalidation Trial day 2025-12-25) , next is 特許7381501 "エアロゾル発生装置" (Invalidation Trial day 2025-12-19) .
| - | No. | Title | Invalidation Trial days |
|---|---|---|---|
| 1 | 特許7239774 | 排水部材及び雨樋 | 2025-12-25 |
| 2 | 特許7381501 | エアロゾル発生装置 | 2025-12-19 |
| 3 | 特許6117287 | 無煙タバコ製品 | 2025-12-12 |
Top Patents/Patent Applications with the Highest Number of Invalidationed Trial
Of the patent applications filed in the last 5 years (2021-04-01 to 2026-03-31), 4 patents/patent applications were invalidation trial more than once in the examination process of other patent applications. The mean of the number of invalidation trial is 1.5. The most invalidation trial patent is 特許7659150 "取付具" (3 times) , and the next most invalidation trial patent is 特許7325883 "缶蓋切除器具" (1 times) .
| - | No. | Title | |
|---|---|---|---|
| 1 | 特許7659150 | 取付具 | 3 times |
| 2 | 特許7325883 | 缶蓋切除器具 | 1 times |
| 3 | 特許7267649 | ろ過装置 | 1 times |
Oppositioned cases
List of latest Oppositioned patents
In the last 3 years (2023-04-01 ~ 2026-03-31), there were 208 patents Opposition from third parties. The average number of Opposition is 1.0 times. The most recently Opposition patent is 特許7720553 "軒樋、受け具、及び、軒樋支持構造" (Opposition day 2026-02-06) , next is 特許7719165 "酸化物半導体膜の成膜方法" (Opposition day 2026-01-30) .
| - | No. | Title | Opposition days |
|---|---|---|---|
| 1 | 特許7720553 | 軒樋、受け具、及び、軒樋支持構造 | 2026-02-06 |
| 2 | 特許7719165 | 酸化物半導体膜の成膜方法 | 2026-01-30 |
| 3 | 特許7713292 | 廃石膏の破砕方法 | 2026-01-26 |
Protested cases
List of latest Protested patents
In the last 3 years (2023-04-01 ~ 2026-03-31), there were 737 patents Protest from third parties. The average number of Protest is 1.4 times. The most recently Protest patent is 特開2024-074966 "便器装置" (Protest day 2026-03-24) , next is 特許7841099 "振動発生装置" (Protest day 2026-03-23) .
| - | No. | Title | Protest days |
|---|---|---|---|
| 1 | 特開2024-074966 | 便器装置 | 2026-03-24 |
| 2 | 特許7841099 | 振動発生装置 | 2026-03-23 |
| 3 | 特開2026-018939 | ステータユニット及びそれを用いた電動弁 | 2026-03-23 |
Top Patents/Patent Applications with the Highest Number of Protested
Of the patent applications filed in the last 5 years (2021-04-01 to 2026-03-31), 423 patents/patent applications were protest more than once in the examination process of other patent applications. The mean of the number of protest is 1.2. The most protest patent is 特開2023-089509 "高圧洗浄車におけるホースガイド具の収納構造" (7 times) , and the next most protest patent is 特開2025-062028 "容器" (5 times) .
| - | No. | Title | |
|---|---|---|---|
| 1 | 特開2023-089509 | 高圧洗浄車におけるホースガイド具の収納構造 | 7 times |
| 2 | 特開2025-062028 | 容器 | 5 times |
| 3 | 特許7394405 | 親綱用仮設支柱取付台座およびその製造方法 | 4 times |
Inspectioned cases
List of latest Inspectioned patents
In the last 3 years (2023-04-01 ~ 2026-03-31), there were 1,226 patents Inspection from third parties. The average number of Inspection is 1.4 times. The most recently Inspection patent is 特許6664750 "放射性物質吸着フィルタ及び放射性物質吸着装置" (Inspection day 2026-03-24) , next is 特許7485583 "薬剤揮散装置、及び、薬剤揮散方法" (Inspection day 2026-03-24) .
| - | No. | Title | Inspection days |
|---|---|---|---|
| 1 | 特許6664750 | 放射性物質吸着フィルタ及び放射性物質吸着装置 | 2026-03-24 |
| 2 | 特許7485583 | 薬剤揮散装置、及び、薬剤揮散方法 | 2026-03-24 |
| 3 | 特開2024-106200 | 改装建具 | 2026-03-24 |
Top Patents/Patent Applications with the Highest Number of Inspectioned
Of the patent applications filed in the last 5 years (2021-04-01 to 2026-03-31), 627 patents/patent applications were inspection more than once in the examination process of other patent applications. The mean of the number of inspection is 1.2. The most inspection patent is 特開2023-089509 "高圧洗浄車におけるホースガイド具の収納構造" (6 times) , and the next most inspection patent is 特許7675897 "容易な着脱のための履物カウンタ" (6 times) .
| - | No. | Title | |
|---|---|---|---|
| 1 | 特開2023-089509 | 高圧洗浄車におけるホースガイド具の収納構造 | 6 times |
| 2 | 特許7675897 | 容易な着脱のための履物カウンタ | 6 times |
| 3 | 特許7675896 | 容易な着脱のための履物カウンタ | 6 times |
Cited cases
Top Patents/Patent Applications with the Highest Number of Cited
Of the patent applications filed in the last 5 years (2021-04-01 to 2026-03-31), 2,382 patents/patent applications were cited more than once in the examination process of other patent applications. The mean of the number of cited is 1.5. The most cited patent is 特許7530452 "男性流体収集アセンブリ及びシステム、その使用方法と製造方法" (54 times) , and the next most cited patent is 特許7355441 "遊技台" (30 times) .
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