A study of Patent Thickets (1.31Mb) - UK Intellectual Property Office
A study of Patent Thickets (1.31Mb) - UK Intellectual Property Office
A study of Patent Thickets (1.31Mb) - UK Intellectual Property Office
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76 A Study <strong>of</strong> <strong>Patent</strong> <strong>Thickets</strong><br />
7.4 Additional Tables<br />
Number <strong>of</strong> areas Number <strong>of</strong> firms Number <strong>of</strong> entries<br />
1 3,507 3,507<br />
2 1,901 3,802<br />
3 781 2,343<br />
4 313 1,252<br />
5 158 790<br />
6 72 432<br />
7 42 294<br />
8 20 160<br />
9 10 90<br />
10 6 60<br />
11 10 110<br />
12 4 48<br />
14 2 28<br />
15 or more 4 75<br />
Total 6,830 12,991<br />
Table 7.1: Number <strong>of</strong> technology areas entered 2002-2009
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