Measures for textual patent similarities: a guided way to select appropriate approaches

Moehrle, Martin G.

doi:10.1007/s11192-010-0243-3

Cited by 54 publications

(25 citation statements)

References 25 publications

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“…The technological similarity between two patents can be calculated by using similarity coefficient such as Sorensen coefficient, Jaccard coefficient, cosine coefficient, and inclusion coefficient (Moehrle 2010). This paper simply adopted Sorensen coefficient and Here, N(X) and N(Y) were the number of SAO structures in patent X and Y, and N(X,Y) is the number of semantically identical SAO structures.…”

Section: Measurement Of Semantic Technological Similarity Among Patentsmentioning

confidence: 99%

Identifying patent infringement using SAO based semantic technological similarities

2011

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Companies should investigate possible patent infringement and cope with potential risks because patent litigation may have a tremendous financial impact. An important factor to identify the possibility of patent infringement is the technological similarity among patents, so this paper considered technological similarity as a criterion for judging the possibility of infringement. Technological similarities can be measured by transforming patent documents into abstracted forms which contain specific technological key-findings and structural relationships among technological components in the invention. Although keyword-based technological similarity has been widely adopted for patent analysis related research, it is inadequate for identifying patent infringement because a keyword vector cannot reflect specific technological key-findings and structural relationships among technological components. As a remedy, this paper exploited a subjectaction-object (SAO) based semantic technological similarity. An SAO structure explicitly describes the structural relationships among technological components in the patent, and the set of SAO structures is considered to be a detailed picture of the inventor's expertise, which is the specific key-findings in the patent. Therefore, an SAO based semantic technological similarity can identify patent infringement. Semantic similarity between SAO structures is automatically measured using SAO based semantic similarity measurement method using WordNet, and the technological relationships among patents were mapped onto a 2-dimensional space using multidimensional scaling (MDS). Furthermore, a clustering algorithm is used to automatically suggest possible patent infringement cases, allowing large sets of patents to be handled with minimal effort by human experts.The proposed method will be verified by detecting real patent infringement in prostate cancer treatment technology, and we expect this method to relieve human experts' work in identifying patent infringement.

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Section: Measurement Of Semantic Technological Similarity Among Patentsmentioning

confidence: 99%

Identifying patent infringement using SAO based semantic technological similarities

2011

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“…In this context, we focused on new aspects of the four‐wheel drive train. As patent analysis is a demanding task, we applied semantic patent analysis to obtain insights into the patent landscape and to gain orientation in the field of four‐wheel drive technology (see Gerken et al., ; Moehrle, ; Gerken and Moehrle, ; Moehrle and Gerken, ). Next, the first occurrence of each technology in patent literature was identified. For this purpose, we investigated the international publication date of the patents corresponding to SUBARU's technologies.…”

Section: Methodsmentioning

confidence: 99%

One year ahead! Investigating the time lag between patent publication and market launch: insights from a longitudinal study in the automotive industry

2014

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Technology-oriented companies find themselves confronted with the challenge of having to react quickly to technology-based innovations by competitors. Especially the market launches of innovative products have the ability to change the competitive environment dramatically. This calls for the ability to discern product technologies in due time. Even though several methods of technology monitoring are based on patent information, the important time lag between patent disclosure and market launch is still unclear and volatile for reasons unknown. Therefore, we have analyzed this time lag of a respective product by way of a longitudinal case study in the field of automotive engineering. The results show that in our case, patents form a valuable information source in short-term product technology monitoring. Hence, analyzing patents in the context of product technologies and reacting to emerging products is a race against time.

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“…These technical terms are extracted from the abstract fields with special attention to growth in frequency. Additionally, calculating textual similarity based on shared terms goes deeper, which is also related to strong citation links and prior art analysis, infringement analysis, or patent mapping (Moehrle 2010). Some research indicates that the overall relationship among patents provides richer information and thus enables deeper analyses, since it takes more diverse keywords into account (B.…”

Section: Co-word Analysis Based On Patent Textual Informationmentioning

confidence: 99%

A hybrid method to trace technology evolution pathways: a case study of 3D printing

et al. 2017

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Whether it be for countries to improve the ability to undertake independent innovation or for enterprises to enhance their international competitiveness, tracing historical progression and forecasting future trends of technology evolution is essential for formulating technology strategies and policies. In this paper, we apply co-classification analysis to reveal the technical evolution process of a certain technical field, using co-word analysis to extract implicit or unknown patterns and topics, and main path analysis to discover significant clues about technology hotspots and development prospects. We illustrate this hybrid approach with 3D printing, referring to various technologies and processes used to synthesize a three-dimensional object. Results show how our method offers technical insights and traces technology evolution pathways, and then help decision-makers guide technology development.

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Measures for textual patent similarities: a guided way to select appropriate approaches

Cited by 54 publications

References 25 publications

Identifying patent infringement using SAO based semantic technological similarities

Identifying patent infringement using SAO based semantic technological similarities

One year ahead! Investigating the time lag between patent publication and market launch: insights from a longitudinal study in the automotive industry

A hybrid method to trace technology evolution pathways: a case study of 3D printing

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