A method for estimating the relative impact of two or more patent portfolios belonging to one or more companies is disclosed. Each patent of a patent portfolio is categorized into at least one market segment. A Technological Strength Index (TSI) is computed for each patent based on patent citations....http://www.google.com.au/patents/US20080091620?utm_source=gb-gplus-sharePatent US20080091620 - Method and computer program product for estimating the relative innovation impact of companies
