Securing the Right of Prior Use for Patents

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Filing patents is an expensive and time-consuming process. Therefore, many businesses innovate without filing patents for each innovation. This approach inherits the risk that a competitor might file a patent on the same innovation in the future. Especially, if the invention is actively used and details are disclosed.

As a result, not the inventor becomes the patent holder, but the competitor, who is first to file. To avoid a scenario where a business files a patent to inhibit a competitor, many countries have established a right of prior use for patents. That means that, if a company can prove that they were using the invention before a patent was filed, they are not affected by that patent.

In theory, this seems to be a good idea. In practice, however, an absolute proof that an invention was used prior to a certain date is almost impossible to provide or extremely costly. After all, any documentation about any usage might be dated back, and witnesses might be influenced.

The Solution

OriginStamp provides an easy and inexpensive possibility to prove that a documentation existed prior to a certain time and date and that this documentation hasn’t been changed since then.

Hence, OriginStamp can be used to create an important piece of evidence that helps to secure the right of prior use for patents. In particular, a tamper-proof, timestamped documentation of the usage of an invention can be created.

Ideally, such a documentation not only contains the invention and describes how it is used within the company, but it must also contain the address and name of the company that is using the invention. This documentation will now be a link between the company and its invention.

In practice, such a documentation could be written in a simple Word file. It is also possible to create a documentation consisting of multiple individual files. In that case, the documentation can be a ZIP-file of a collection of all individual files.

This documentation is a good starting point but has one significant drawback: It could have been created after a competitor filed his patent. Thus, the legal power of this documentation is questionable.

With OriginStamp, however, it is now easy to prove that the documentation existed prior to a certain date and that it wasn’t changed since then. Put simply, OriginStamp takes a cryptographic fingerprint of a documentation and presents it to more than 10,000 witnesses worldwide, whereas each witness is a participant of the public Bitcoin blockchain.

It is also documented at which date and time the fingerprint was witnessed. Since the Bitcoin blockchain is close to impossible to manipulate, this timestamp is also tamper-proof, not limited to country borders and is not artificially limited in the duration of its validity.

Finally, OriginStamp will return a certificate for the timestamp. With this certificate, the company who created the documentation can prove that this documentation existed prior to a certain date and time and that it wasn’t changed since then.

Most importantly, once the certificate is created, the verification process of a timestamp does not depend on OriginStamp. Even if OriginStamp would discontinue its service tomorrow, all timestamps where the corresponding certificate is saved, remain valid.

Therefore, no one, also not OriginStamp is able to create a timestamp which is dated back. All of this makes the certificate issued by OriginStamp a very important piece of evidence when it comes to securing the right of prior use for patents.



After many years, we haven’t seen any court action, yet. Why? We suppose, that all potential claims were accepted thanks to our Blockchain-timestamping evidence and no court action even was needed. Therefore, we cannot guarantee for the acceptance of a Blockchain timestamp at court. We are only aware of one decision in China, where the Blockchain-based timestamp had been accepted as sufficient evidence, see:

The editorial content of OriginStamp AG does not constitute a recommendation for investment or purchase advice. In principle, an investment can also lead to a total loss. Therefore, please seek advice before making an investment decision.