Scientometric study of patent literature in medicine

UNSPECIFIED Scientometric study of patent literature in medicine., 2008 [Conference proceedings]


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English abstract

A scientometric study was performed to assess the quantitative trend of patent literature in MEDLINE throughout 1965-2005. The kind of languages, publication type, journals, and the origin of published documents were presented. The study showed that the growth of patent literature in MEDLINE with an annual growth of 11.4% was 3.6 times higher than the common growth of the MEDLINE database which had an annual growth of 3.1% through 1965-2005. More than 90% of all documents indexed as “patents” in MEDLINE were in English followed by Russian (4.12%), French (1.36%) and German (1.20%). The study indicated that Genes and Genetics was the most frequented Major MeSH Descriptors (Main Heading) in MEDLINE throughout the period of study. The USA with publishing 55% of all documents indexed as patents in MEDLINE was the most prolific country in the term of patent literature, followed by England with 27%, USSR with 4%, Canada with 2%. It is remarkable that 82% of all publications belong to the USA and England; only 18% of publications belong to other countries in the world. The origin country of four documents stayed unknown (in MEDLINE). Journal “Nature” with publishing 14% of all documents, indexed as patents (patent literature) in PubMed was the most prolific periodical, followed by journal “Science” with 8%, “Nature-biotechnology” with 8%, “Lancet” with 2%, “BMJ” with 2%, “New Scientist” with 2% and “Food and drug law” with 1% respectively. From a total of 31 publications kind regarding to the documents indexed as patents in MEDLINE with a total frequencies of 3,207 titles, 46% of all publications were in the form of journal Articles, 22% in the form of News, 5% Letter, 5% Comment, 4% Review, 3% Editorial, 2% Newspaper Article, 2% Research Support, 2% English Abstract. The rest were less than 2%. The proportion of publications in English showed considerable growth through 1965-2005. It reached from 52% in 1965 to 90% in 2005 an increase of 72%. Analysis of study predicted that the percentage of publications in English in MEDLINE will reach to the saturation level at 97% in 2030. This indicates that the editorial policy of entering data to the database of MEDLINE is being changed, and the atention of policy makers in this database have focused on the literature of science in English.

Item type: Conference proceedings
Keywords: patent literature, MEDLINE, scientometric study, literature of science, editorial policy
Subjects: B. Information use and sociology of information > BH. Information needs and information requirements analysis.
B. Information use and sociology of information > BA. Use and impact of information.
B. Information use and sociology of information > BC. Information in society.
Depositing user: Ilaria Fava
Date deposited: 12 Sep 2008
Last modified: 02 Oct 2014 12:12


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Biglu, Mohammad Hossein (2008). Scientometric study of patent literature in MEDLINE &SCI. Ph.D. Dissertation, Humboldt - Universität zu Berlin, Institut für Bibliotheks-und Informationswissenschaft.

Biglu, Mohammad Hossein (2008). The influence of references per paper in the SCI to Impact Factor and the Matthew Effect. Scientometrics Vol 74. Retrieved December 10, 2007 from

Glänzel, Wolfgang and Meyer, Martin(2003). Patents cited in the scientific literature: An exploratory study of reverse. Citation relations. Scientometrics, Vol. 58, No. 2, P.415.428.

Narin, Francis, and Elliot Noma (1985), Is Technology Becoming Science? Scientometrics, Vol. 7, P. 369-381.

United States National Library of Medicine.


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