Comparing Java to .Net and C-sharp
With Oracle's patent attack on Google's Java-like Dalvik, many people asked if Java's patent risk is similar or higher than that of Microsoft's C# / Mono.
Contents
For both languages, there is only one patent holder which asserts that it has patents on the language and is willing to take developers to court. For C#, that's Microsoft, and for Java, that's Oracle.
For Java there is also a patent which was owned by SCO until recently.[1][2] The current owner isn't known, but this patent has never been mentioned in relation to enforcement.
What forms of aggression have the patent holders shown?
Microsoft has long history of aggressive use of their patents against software projects such as their use of their FAT patents (against TomTom and against and unknown defendant in Germany[3]), and their litigation against Salesforce. Microsoft executives have also made repeated comments about free software such as GNU/Linux infringing their patents and have knelt on various free software distributors to obtain royalties for the distribution of GNU/Linux.
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Related pages on ESP Wiki
External links
- .Net On Android Is Safe, Says Microsoft, 27 Aug 2010, Slashdot
- Initial Thoughts on Oracle vs Google Patent Lawsuit, 13 Aug 2010, Miguel de Icaza
- Java Language Specification
- Mono and Microsoft’s patents, Wikipedia
