6. A method for identifying products potentially infringing a patent, the method comprising: receiving an identifier of the patent; retrieving text of the patent; parsing the text of the patent to identify claims section of the text of the patent; parsing the claims section to identify one or more individual claims of the patent; parsing the individual claims of the patent to identify one or more independent claims of the patent, the one or more independent claims comprising a first independent claim; identifying a preamble of the first independent claim; identifying one or more limitations of the first independent claim; identifying one or more key terms for each limitation of the one or more limitations and for the preamble of the first independent claim; formulating at least one query to search for data items that include the key terms of the one or more limitations of the first independent claim; launching the at least one query; receiving search results responsive to the at least one query; and reviewing the search results of the at least one query; wherein the step of identifying one or more key terms comprises: for each word of a plurality of words in the limitations, calculating a ratio of (1) frequency of occurrence within the text of the patent of said each word to (2) frequency of occurrence of said each word in a neutral text not related to the patent or to technology of the patent, thereby obtaining a plurality of ratios, each ratio of the plurality of ratios corresponding to a different said each word; comparing each ratio of the plurality of ratios to a first predetermined parameter to obtain a plurality of key terms, a key term being a word of the plurality of words corresponding to a ratio of the plurality of ratios that exceeds the first predetermined parameter.
6. A method for identifying products potentially infringing a patent, the method comprising: receiving an identifier of the patent; retrieving text of the patent; parsing the text of the patent to identify claims section of the text of the patent; parsing the claims section to identify one or more individual claims of the patent; parsing the individual claims of the patent to identify one or more independent claims of the patent, the one or more independent claims comprising a first independent claim; identifying a preamble of the first independent claim; identifying one or more limitations of the first independent claim; identifying one or more key terms for each limitation of the one or more limitations and for the preamble of the first independent claim; formulating at least one query to search for data items that include the key terms of the one or more limitations of the first independent claim; launching the at least one query; receiving search results responsive to the at least one query; and reviewing the search results of the at least one query; wherein the step of identifying one or more key terms comprises: for each word of a plurality of words in the limitations, calculating a ratio of (1) frequency of occurrence within the text of the patent of said each word to (2) frequency of occurrence of said each word in a neutral text not related to the patent or to technology of the patent, thereby obtaining a plurality of ratios, each ratio of the plurality of ratios corresponding to a different said each word; comparing each ratio of the plurality of ratios to a first predetermined parameter to obtain a plurality of key terms, a key term being a word of the plurality of words corresponding to a ratio of the plurality of ratios that exceeds the first predetermined parameter. 10. The method of claim 6 , further comprising: selecting synonyms of the key terms; and translating the key terms and the synonyms from language of the patent into a first foreign language, to obtain translated key terms in the first foreign language; wherein the step of formulating at least one query comprises the step of formulating a first query in the language of the patent to search for data items that include the key terms of the one or more limitations of the first independent claim and the synonyms of the key terms, and the step of formulating a second query in the first foreign language to search for data items that include the key terms of the one or more limitations of the first independent claim and the synonyms of the key terms in the first foreign language, the second query being equivalent to the first query.