Defensive publication

Patent law

Overviews

* Patents
* History
* Economics
* Societal views

Basic concepts

* Application
* Prosecution
* Opposition
* Licensing
* Infringement
* Valuation
* Patent claims

Patentability

* Novelty
* Inventive step and non-obviousness
* Inventorship
* Industrial applicability
* Patentable subject matter
* Person skilled in the art
* Prior art
* Utility

Additional requirements

* Sufficiency of disclosure
* Unity of invention

By region / country

* Patent Cooperation Treaty (PCT)
* Australia
* Canada
* China
* Europe
* Germany
* Japan
* Netherlands
* United States

By specific subject matter

* Biological
* Business method
* Chemical
* Insurance
* Software
* Tax

See also

* Category
* Glossary

* v
* t
* e

A defensive publication, or defensive disclosure, is an intellectual property strategy used to prevent another party from obtaining a patent on a product, apparatus or method for instance. The strategy consists in disclosing an enabling description and/or drawing of the product, apparatus or method so that it enters the public domain and becomes prior art.[1] Therefore, the defensive publication of perhaps otherwise patentable information may work to defeat the novelty of a subsequent patent application.[2] Unintentional defensive publication by incidental disclosure can render intellectual property as prior art.[3]

One reason why companies decide to use defensive publication over patents is cost. In the United States, for example, to obtain a published patent application, one must incur at least filing fee, examination fee, search fees, and early publication fees (currently $530,[when?] minimum plus $300 for early publication), and meet the filing requirements for a proper patent application.

"The defensive publication route is especially useful for innovations that do not warrant the high costs incurred in patent applications but to which scientists do want to retain access."[4]

## Contents

* 1 See also
* 2 References
* 3 Further reading
* 4 External links

## See also

* Cloem, a company creating computer-generated variants of patent claims, which may potentially be defensively published
* IBM Technical Disclosure Bulletin
* Trade secret
* United States Defensive Publication (existing between April 1968 and May 8, 1985)
* United States Statutory Invention Registration (existing until 2013)

## References

1. ↑ "FAQs". http://www.defensivepublications.org/defensive-pubs-faqs. Retrieved 8 December 2020.
2. ↑ Barrett, Bill (2003). "Defensive use of publications in an intellectual property strategy". Nature Biotechnology 20 (2): 191–193. doi:10.1038/nbt0202-191. PMID 11821867. "[. . .] the successful defensive publication renders the competitor's invention obvious or lacking in novelty.".
3. ↑ Huggins, John. "Copyrights, Designs and Intellectual Property". http://www.hamradio.me/uncategorized/copyrights-designs-intellectual-property.html. Retrieved 27 October 2015.
4. ↑ S. Adams, V. Henson-Apollonio, "Defensive Publishing: A Strategy of Maintaining Intellectual Property as Public Goods" [1], USAID

## Further reading

* Johnson, Justin P., Defensive Publishing by a Leading Firm (October 8, 2004). Available at SSRN: http://ssrn.com/abstract=606781 or doi:10.2139/ssrn.606781.
* Baker, Scott and Doug Lichtman and Claudio Mezzetti, Disclosure And Investment As Strategies In The Patent Race, University of Chicago Law School. 2000. (pdf)

## External links

* Proofbox an online platform for defensive publication with qualified electronic signatures and timestamping under eIDAS regulation

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