{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8527488","patent":{"patent_number":"US-8527488","title":"Negative regular expression search operations","assignee":null,"inventors":[],"filing_date":"2010-07-08T00:00:00.000Z","publication_date":"2013-09-03T00:00:00.000Z","cpc_codes":["G06F"],"num_claims":24,"abstract":"A content search system determines whether an input string matches a negative regular expression that includes a negative pattern and an optional positive pattern. If the input string matches the positive pattern and does not match the negative pattern, a match between the input string and the negative regular expression is indicated. The positive pattern and the negative pattern may be compared to the input string in a single pass of the input string. The content search system may be implemented in a content addressable memory (CAM) device. The negative regular expression may specify a particular portion of the input string, such as a range of characters or bytes of a data packet, in which the negative pattern should not match for a match between the negative regular expression and the input pattern to be indicated."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Negative regular expression search operations","description":"A content search system determines whether an input string matches a negative regular expression that includes a negative pattern and an optional positive pattern. If the input string matches the posi","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8527488","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-8527488","citation_suggestion":"Patentable. \"Negative regular expression search operations\" (US-8527488). https://patentable.app/patents/US-8527488","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8527488","json":"https://patentable.app/api/llm-context/US-8527488","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T01:55:16.595Z"}