A new way to find relevant Chinese (and South Korean, Japanese and Taiwanese and others) prior art patents

Family Cluster Searching has just been released, and this includes a number of benefits – including the ability to search for Chinese patents.

Take, for example, CN10424757B, filed by Nike for Footwear having sensor system, in this case a pressure sensor. 

We can easily write a query to look for similiar patents, in this case the most similar 2000 patents:



This will returns a list headlined by US patents – which is not surprising as this patent also includes a US family member


But – maybe you are more interested in patents only filed in China?

That is OK, we can limit the results to those beginning with CN by applying a filter to the list of country codes:



Which will limit the results to those only filed in China – this is only part of a long list.



Note the last column, which refers to the type of citation. None of these patents are known citations – all are unknown – in other words none would be recognised as a patent citation using a conventional patent search database.

And are they relevant? The second on this list, for example CN1036378805 is filed for Shoes and method for measuring exercise load – and discloses ‘An exercise load measuring device is arranged in a shoe pad inside each shoe body’.

While this particular patents has a priority date after the Nike patent, some other of these Chinese patents have earlier priority dates, for example CN201034771, with a priority date of 2007 and which discloses pressure sensors insides shoes – and again which was not cited by the Nike patent.


What about Japanese, South Korean and Taiwanese patents? And other non-English jurisdictions?

A similar filtering process uncovered 37 Japanese, 6 South Korean and 4 Taiwanese patents. Even 12 German  and 7 French patents. Not all were relevant – but many were, and also had earlier priority dates. None of these patent had previously been cited.


But could you find these patents with conventional searching systems?

Maybe – maybe not?.his simple search uncovered a lot of prior art that had not previously been listed as prior art by any of the examiners of the Nike patent. 


What if you had started with the US equivalent Nike patent – being US20130213144

You would have ended up with exactly the same result – Family Cluster Searching provides the same result for each family member.


Would you like to try this for yourself?

Please contact us for a demonstration and free trial


Special note for Chinese users

The above demonstration refers to lookups in Google patent, which is not available in China. However we offer a Chinese language version that does not rely on Google patents – again please contact us for details.



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