Strategy19.03.2026

The Four Most Valuable Use Cases for Defensive Publications

Updated on 19.03.2026

7 min read
The Four Most Valuable Use Cases for Defensive Publications

In modern IP strategy, it is about intelligently occupying room for maneuver. Defensive publication serves as a strategic extension to permanently support Freedom to Operate (FTO).

Four specific use cases have emerged where a process-compliant disclosure can make a difference.

1. Management of Invention Disclosures

Companies often generate more invention disclosures than their budget allows for patenting. Often the decision is made to only archive the less important or currently insufficiently valuable inventions internally.

The risk: Competitors could be working on equivalent developments in parallel. If they file a patent, you may lose your freedom to operate despite having the earlier invention.

The solution: Inventions can be discreetly established as prior art. This contributes to preventing third parties from later obtaining an exclusion right for the same invention. You thus support your freedom to operate.

The Four Most Valuable Use Cases for Defensive Publications - Image 1

2. Documentation of Trade Fair Appearances

A trade fair appearance can constitute a disclosure. However, proving this years later can be difficult. Photos and corresponding documentation without further evidence such as witness statements or a verifiable publication date are often insufficient.

Instead of relying on vague memories and third-party witness statements, preventive documentation is an established path: publish photos and descriptions as a defensive disclosure. This creates tamper-proof evidence of prior art.

3. Complement to Prior User Rights

In patent law, there is the concept of internal prior use. However, proving such prior user rights is a resource-intensive hurdle. Courts usually require evidence of concrete measures toward market introduction.

The defensive publication: As a complementary measure to prior user rights, disclosure via Proofbox creates prior art. Once the innovation is published, it counts as prior art. You then have a tamper-proof document and an associated evidence protocol.

4. Additional Publication of a Patent Application

A patent application is typically published only 18 months after its filing or priority date. Particularly in the European legal framework, there are peculiarities whereby patent applications filed in the interim (i.e., after the filing or priority date and before the publication date) for the same invention need only distinguish themselves from the older right in terms of novelty (not in terms of an otherwise required inventive step).

An additional defensive publication of a previously filed patent application can be useful in this regard, as the content is established as prior art more quickly. This can further increase the value of the invention in addition to the patent application.

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