Recent developments in patents statistics and data bases at EPO and OECD EPIP – Bocconi February 24-25, 2006 Dominique Guellec OECD.

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Presentation transcript:

Recent developments in patents statistics and data bases at EPO and OECD EPIP – Bocconi February 24-25, 2006 Dominique Guellec OECD

Structure of the presentation 1.Patents databases for statistical uses: Patstat 2.Patent indicators for macroeconomic analysis: Patent families

Patents databases: Current situation Difficulty to access patent data; each analysts/researcher to set up his/her own database extracted from data published by patent offices => high cost, duplication of costs, => uneven quality, => absence of standardisation, => lack of transparency.

Purpose of Patstat Patstat is a response to the current needs. It is a database of patents designed for serving statistical purposes => format compatible with SQL, SAS etc. Could be used for compiling indicators or conducting analytical work (policy, academic)

Contents Documentation: Data coming from 73 offices world wide, since beginning of the 20th century for certain offices. Post grant data: About 40 offices.

Variables in Patstat Application information (dates, numbers) Applicants information Inventors information Priorities information IPC classes information National patent classes information Publications information References (citations) information (about 10 countries) Licence information Entry into force information (by country) Lapse information (by country)

Cleaned names Current effort sponsored by Eurostat for cleaning the name of applicants at EPO and USPTO (correcting misspellings etc.). Cleaned names will be made available in Patstat.

Patstat sources EPO sources: DocDB PRS EPASYS CDS Other sources: US publications EUROSTAT name mapping...

An evolving product Will adapt to needs expressed by users More variables could be added, e.g. procedural data in EPO etc. Construct various tools for manipulating the data and complementary tables (e.g. families, citations)

Contribution of users Checking quality (more than 50 million records) => reporting defaults to EPO! Further needs: Cleaning names for non western companies (Asia) Cleaning SMEs names Consolidating groups of enterprises

Conditions of access The first complete version is to be issued early April Then twice updates per year. Available to all users committing to non commercial use and no further dissemination of the data.

A hub Patstat will find its place in the growing industry of patents databases: due to its harmonised priority numbers, it could be used as a pivot to match data from various patent offices – hence allowing “harmonised diversity”.

Patent families

Patent indicators As an extremely rich source of information, patents can be used as indicators reflecting the technological activity of countries => location of R&D, circulation of knowledge, co-operation in R&D, specialisation, technological performance etc. BUT... possible noise and biases in the data make necessary elaborated filtering.

Sources of noise and bias Patents are complex entities... various types of titles (e.g. applications vs. grants, priorities vs. divisionals), cross country differences and changes over time in legal systems. Heterogeneity in value (highly skewed distribution). Patenting strategy of companies create distortions in the data (e.g. cross industry differences in propensity to patents, home bias etc.) => patent data reflect competitive strategy rather than just technology?

Country shares of patents applied for at the EPO and patent grants by the USPTO for priority year 1997 (Source: OECD)

Grants or applications?

One candidate as a solution: Triadic families A patent family is a set of applications or patents filed in different offices to protect a same invention. A Triadic family (OECD definition) is a set of applications at the EPO and JPO and grants by USPTO which share one or more priorities.

Advantages of patent families Address two issues in patent counts => heterogeneity in value => cross country biases

Heterogeneity in value Patents filing is costly (fees, translation, attorney, enforcement) => applicants are selective: Filing in several jurisdiction should be justified by expected value. Members of triadic families are more cited than other patents, have more claims etc.

Home advantage Families are measured on a more neutral ground than applications filed in a single jurisdiction.

Countries shares in patents indicators Priority year 1999, % (Source: OECD)

Technical problems in compiling patent families No one to one correspondence between filings in different countries (e.g. two JPO priorities will make one USPTO application and one EPO application), plus problem with divisionals etc. => family counts could be biased if one counts ALL priorities. OECD solution = "consolidation": All applications sharing one or more priorities are counted as ONE family.

The impact of consolidation on family number (source: OECD)

Future developments US applications instead of grants Cross-industry biases Families citations Improving timeliness (nowcasting) Extending to more jurisdictions than EPO, JPO and USPTO?