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Imagine being asked to search for prior art for patent US9,000,000, the patent featured in our last blog which compared Cluster Searching to Semantic searching. What search strategies could you use?

Firstly, lets think about how you might search for prior art in a conventional word based prior art search system. You might develop a series of queries. Maybe something like:

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Summary

How does Cluster Searching compare to semantic patent searching? In this blog we run a simple comparison based on the round number patent of US9,000,000 - by choosing this particular patent we have tried to avoid cherry picking a patent that is particularly suited to Cluster Searching.

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How long does a patent invalidation search take?

If you were to use a traditional approach, it could be quite a while. You need to work out the keywords for the search, and make sure that you don't miss any relevant keywords. You might also look up and apply a class code filter to the results, an additional step which could take additional time. 

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Many patent owners, whether universities, SMEs, research organisations or even big corporations, end up having a large patent portfolio that can cost them a significant sum to maintain over time. For example, to renew a US patent at the 11.5 year mark can cost up to US$7400, while Chinese and many European patents need to be renewed every year, with a total cost exceeding US$1000 per year  (including service charges) in some cases. 

In an ideal world the owners would value each patent before renewing them, which could provide them with the confidence to save money by abandoning low value patents.

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How much is a patent worth?

Some say that most patents are worthless, but conversely some patents are very valuable, and hard-nosed companies still invest heavily in new patents

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