According to the uncertainty about patent quality it may make sense to simply have a look at the quantities of patents that are filed. Indeed, when analysing all patents worldwide, the correlation between patent filings and and patent portfolio values shows a significant correlation. This phenomenon is known as the law of large numbers a statistical trap. But when doing a segmentation, e.g. by comparing groups of industrial sectors, countries or company sizes, the correlation becomes more and insignificant. The study shows a lot of unexpected surprises in terms of value averages and patent filings when different segmentations were used.
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