PATENT OWNERSHIP FRAGMENTATION AND MARKET VALUE: AN EMPIRICAL ANALYSIS
2019 ◽
Vol 23
(02)
◽
pp. 1950012
Keyword(s):
Patent ownership Fragmentation following the U.S. pro-patent shifts has built overlapping intellectual property rights or patent thickets. This has made the use of others’ innovations costlier due to transaction costs, licensing fees, and hold-up. Using panel data on 2,441 public U.S. manufacturing firms for 1976–2002, I find that patent thickets lower firms’ expected profit and their market value. I also find that firms with a large patent portfolio experience a smaller effect, likely because stronger bargaining position lowers the hold-up likelihood. There is no systematic time effect from patent thickets on firms’ market value with a large patent portfolio size.
2010 ◽
Vol 77
(8)
◽
pp. 1322-1338
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Keyword(s):
1994 ◽
Vol 6
(1)
◽
pp. 27-44
◽
1990 ◽
Vol 21
(1)
◽
pp. 119-132
◽