{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-10523815","patent":{"patent_number":"US-10523815","title":"System and method for limiting incoming spam calls","assignee":null,"inventors":[],"filing_date":"2018-11-30T00:00:00.000Z","publication_date":"2019-12-31T00:00:00.000Z","cpc_codes":["H04M","H04M","H04M","H04M"],"num_claims":23,"abstract":"A system and method for maintaining a grey list for controlling incoming calls from numbers on a telephone network. Information associated with previous calls received by the telephone is stored in the form of a grey list. The stored information includes an indication of whether each of the previously received calls passed a previous challenge. Based on the stored information, when an incoming call is received, a determination is made whether the incoming call corresponds to a call that passed a previous challenge. The incoming call connected to the telephone if the stored information indicates that the incoming call previously passed a challenge. An action is taken if the stored information does not indicate that the incoming call previously passed the challenge. The action may include blocking the call, allowing the call or providing a current challenge to the call."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"System and method for limiting incoming spam calls","description":"A system and method for maintaining a grey list for controlling incoming calls from numbers on a telephone network. Information associated with previous calls received by the telephone is stored in th","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-10523815","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-10523815","citation_suggestion":"Patentable. \"System and method for limiting incoming spam calls\" (US-10523815). https://patentable.app/patents/US-10523815","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-10523815","json":"https://patentable.app/api/llm-context/US-10523815","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T18:56:24.576Z"}