Invalidity dossier
US 8248229
Powerline network system having data relay function
Current assignee: Acbel Polytech Inc
Added 9/24/2026, 2:11:39 AM
Active provider: DeepSeek · deepseek-flash
Patent summary
Title, assignee, inventors, filing/issue dates, abstract, and a plain-language overview of the claims.
Patent Overview — US 8,248,229 B2
Title: "Powerline network system having data relay function"
Assignee: Acbel Polytech Inc. (original and current assignee, per source).
Inventors: Che-Cheng Chang, Hao-Jan Chiang, Chih-Pin Shih.
Key dates: Priority 2009-09-14 (CN2009101775088A); application US12/572,657 filed 2009-10-02; published as US20110080301A1 on 2011-04-07; granted 2012-08-21. Status: Expired – Fee Related; adjusted expiration 2031-02-07 (legal status per source, not a legal conclusion).
Purpose (per the text): Powerline-communicated monitoring data is prone to noise and attenuation over distance, and existing analog repeaters must be serially spliced into powerlines — time-consuming, costly, and requiring high-power components in high-power zones. The stated objective is a powerline network communication system ensuring correct data transmission/receipt and higher reliability, without serially connecting repeaters to the powerlines, while eliminating interference between adjacent power monitoring zones.
Plain-language scope (per the supplied description): The system has multiple power monitoring zones (10)(10′), each with at least one power monitoring device (20), plus at least one repeater (30) connecting devices in two adjacent zones via powerlines (111). Each repeater has a first relay unit (31) and second relay unit (32). Each relay unit fetches data from its zone's powerline, amplifies it, and re-modulates it with a different frequency band before transmitting to the other zone's powerline: band A (FBA), e.g. 60–90 kHz, and band B (FBB), e.g. 110–140 kHz, with FBA ≠ FBB. Relay units include a transformer (33), digital signal processor (34), filters (341)(342), power amplifier (343), and a digital communication interface (35) (UART/RS232/USB). The monitoring device (20) has a power status detecting unit (21), ADC (22), processor (23), powerline communication module (24), and protection circuit (25); FIG. 2 addresses street-light monitoring.
Source: https://patents.google.com/patent/US8248229/en
What the excerpt does not establish: The exact wording of the granted claims, all drawing details, omitted description text, or any litigation, ownership-transfer, validity, or prior-art conclusions.
Word count: ~300.
Generated 10/1/2026, 9:40:47 PM
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Litigation summary
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PTAB challenges
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Assignment history
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Prior art
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Obviousness
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Extensions
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Derivative works
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