I had a novelty search by the UK IPO and it was extremely poor compared to the one by EPO. Maybe the difference in the fees justifies that as it is £300 vs £1,500. Is there any particular office who conducts high quality thorough novelty search but which is cost efficient?

2 Answers 2


There is no particular office I would say. Some patent offices have examiners more knowledgeable in some topics than others, then some examiners are better than others. You could file the same application twice with the same patent office and get two completely different search reports. Since no patent office guarantees a perfect search report, some applicants also request Supplementary International Searches in the international phase to check if other patent offices are able to retrieve additional prior art before entering into the national/regional phases.

Anyway bear in mind that national patent laws typically preclude you from filing the first patent application with any patent office. I do not know the particulars of the British patent law but I guess the first filing should be with the UKIPO, the EPO or the IB with some limitations regarding the ISA you can request. And this question aside, if you were to file your application with say the Chinese patent office, the costs would be significantly higher because you need the services of a registered Chinese patent attorney, and translate your application into Chinese, plus the search report/first office action would be in Chinese as well.


In the past I got several good searches with KPO as ISA. From the U.S. the cost is still about 1/2 what it would be from the EPO. When I started using Korea they were new and charged even less.

It is not part of the body of the question but you could hire a search firm.

  • A long time ago I read about using the KPO as ISA particularly when you had multiple inventions, that way you could save quite some budget if you wanted all the claims to be searched. Regarding the latter, that is a good advice. Sometimes you are able to improve your patent application by conducting a prior art search before filing the application. Commented Jan 24, 2021 at 16:15

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