Robert Arens
2010
Comparison of IPC and USPC classification systems in patent prior art searches
Christopher G. Harris
|
Robert Arens
|
Padmini Srinivasan
Proceedings of the 3rd International Workshop on Patent Information Retrieval, PaIR '10, Toronto, ON, Canada, October 26, 2010
2009
On the role of classification in patent invalidity searches
Christopher G. Harris
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Steven Foster
|
Robert Arens
|
Padmini Srinivasan
Proceedings of the 2nd International Workshop on Patent Information Retrieval, PaIR '09, Hong Kong, SAR, China, November 6, 2009