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Changes in company policy over time
Maybe the best documentation on the evolution of company policy is the statements at the:
The number of patents granted to Microsoft:
- 1987: 1
- 1990: 5
- 1995: 77
- 2000: 1,296
- 2005: 3,955
This could be seen as an indication that Microsoft didn't need patents to get from zero to dominant, but once in a dominant position, they filled their patent portfolio to entrench their position and protect them against competition.
 Related pages on en.swpat.org
- (95% in English) Alcatel: Annuel reports and patents - an interesting look at the evolution of Alcatel's position on patents from 1997 to 2004
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