Prosecution Insights
Last updated: May 29, 2026
Application No. 18/237,393

PLUGGABLE TRANSCEIVER WITH BUILT-IN DETECTION AND MITIGATION OF MALICIOUS NETWORK TRAFFIC

Final Rejection §103
Filed
Aug 23, 2023
Examiner
DUONG, DUC T
Art Unit
2467
Tech Center
2400 — Computer Networks
Assignee
Charter Communications Operating LLC
OA Round
2 (Final)
89%
Grant Probability
Favorable
3-4
OA Rounds
0m
Est. Remaining
91%
With Interview

Examiner Intelligence

Grants 89% — above average
89%
Career Allowance Rate
678 granted / 759 resolved
+31.3% vs TC avg
Minimal +2% lift
Without
With
+2.0%
Interview Lift
resolved cases with interview
Typical timeline
2y 10m
Avg Prosecution
17 currently pending
Career history
787
Total Applications
across all art units

Statute-Specific Performance

§101
3.9%
-36.1% vs TC avg
§103
50.7%
+10.7% vs TC avg
§102
31.3%
-8.7% vs TC avg
§112
8.8%
-31.2% vs TC avg
Black line = Tech Center average estimate • Based on career data from 759 resolved cases

Office Action

§103
DETAILED ACTION Notice of Pre-AIA or AIA Status The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA . Response to Arguments Applicant’s arguments, see pages 1-3 in the Remarks, filed January 19, 2026, with respect to the rejection(s) of claims 1-7, 9-15, and 17-23 under 35 U.S.C. 102 have been fully considered and are persuasive. Therefore, the rejection has been withdrawn. However, upon further consideration, a new ground(s) of rejection is made in view of Singhvi et al (US Publication 2022/0239654 A1). Claim Rejections - 35 USC § 103 In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis (i.e., changing from AIA to pre-AIA ) for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status. The following is a quotation of 35 U.S.C. 103 which forms the basis for all obviousness rejections set forth in this Office action: A patent for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102, if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains. Patentability shall not be negated by the manner in which the invention was made. Claims 1-7, 9-15, and 17-23 are rejected under 35 U.S.C. 103 as being unpatentable over Friedman et al (US Publication 2023/0196458 A1) in view of Singhvi et al (US Publication 2022/0239654 A1). Regarding to claims 1 and 20, Friedman discloses an apparatus 400 (fig. 4) comprising: a network interface receiver 404 configured to receive a plurality of packets (pages 6-7 paragraph 0084); an electronic circuit 408 statically configured in hardware to extract a header of each received packet (page 7 paragraph 0087), evaluate each extracted header based on an access control ruleset (page 7 paragraph 0088; filter rules), and, based on the evaluation, pass a first portion of the received packets and discard a second portion of the received packets (page 7 paragraphs 0089-0090); and a network interface transmitter 406 configured to transmit the first portion of the received packets (page 9 paragraph 0115). Friedman fails to teach for the access control ruleset is static and predefined. However, Singhvi discloses a network device 100 (fig. 1) employing access control lists ACLs, wherein the ACLs include rules that are static and predefined (fig. 4B page 6 paragraph 0071). Thus, it would have been obvious to a person of ordinary skill in the art, before the effective filing date of the claimed invention, to arrange for static and predefined access control ruleset as taught by Singhvi into Friedman’s system to use as a default ACL ruleset when authentication server or administrator did not configure any ACL ruleset. Regarding to claim 2, Friedman discloses a housing 400 enclosing the network interface receiver, the electronic circuit, and the network interface transmitter, wherein the housing has a height of less than 10 mm, a width of less than 15 mm, and a length of less than 60 mm (page 7 paragraph 0085; noted the FPGA 400 include small form-factor housing supporting the measurements). Regarding to claim 3, Friedman discloses the electronic circuit 408 comprises an application-specific integrated circuit (page 6 paragraph 0080). Regarding to claim 4, Friedman discloses the electronic circuit 408 comprises a field-programmable gate array (page 6 paragraph 0080). Regarding to claim 5, Friedman discloses the network interface receiver 404 comprises an electrical network interface receiver (page 7 paragraph 0085; noted the network interfaces 404-406 includes physical layer module and physical coding sub-layer PCS module, which provide electrical transmission/reception) and the network interface transmitter 406 comprises an optical network interface transmitter (pages 6-7 paragraph 0084-0085; noted the network interfaces 404-406 includes physical layer module supporting gigabit Ethernet, which used optical fiber). Regarding to claim 6, Friedman discloses the network interface receiver 404 comprises an optical network interface receiver (pages 6-7 paragraph 0084-0085; noted the network interfaces 404-406 includes physical layer module supporting gigabit Ethernet, which used optical fiber) and the network interface transmitter 406 comprises an electrical network interface transmitter (page 7 paragraph 0085; noted the network interfaces 404-406 includes physical layer module and physical coding sub-layer PCS module, which provide electrical transmission/reception). Regarding to claim 7, Friedman discloses the network interface receiver 404 comprises an electrical network interface receiver and the network interface transmitter 406 comprises an electrical network interface transmitter (page 7 paragraph 0085; noted the network interfaces 404-406 includes physical layer module and physical coding sub-layer PCS module, which provide electrical transmission/reception). Regarding to claim 9, Friedman discloses the electronic circuit 408 is further statically configured in hardware to take account of a volume of packets of a predetermined type in the evaluation (pages 4-5 paragraph 0053). Regarding to claim 10, Friedman discloses an assembly 400 (fig. 4) for connection to an upstream network 104 (page 6 paragraph 0072), the assembly comprising: a small form-factor pluggable module (page 7 paragraph 0085) comprising: a network interface receiver 404 configured to receive a plurality of packets from the upstream network 104 pages 6-7 paragraph 0084); an electronic circuit 408 statically configured in hardware to extract a header of each received packet (page 7 paragraph 0087), evaluate each extracted header based on an access control ruleset (page 7 paragraph 0088; filter rules), and, based on the evaluation, pass a first portion of the received packets and discard a second portion of the received packets (page 7 paragraphs 0089-0090); a network interface transmitter 406 configured to transmit the first portion of the received packets (page 9 paragraph 0115); and a protected device 102 (fig. 1) coupled to the network interface transmitter 406 (page 3 paragraph 0036). Friedman fails to teach for the access control ruleset is static and predefined. However, Singhvi discloses a network device 100 (fig. 1) employing access control lists ACLs, wherein the ACLs include rules that are static and predefined (fig. 4B page 6 paragraph 0071). Thus, it would have been obvious to a person of ordinary skill in the art, before the effective filing date of the claimed invention, to arrange for static and predefined access control ruleset as taught by Singhvi into Friedman’s system to use as a default ACL ruleset when authentication server or administrator did not configure or provide any ACL ruleset. Regarding to claim 11, Friedman discloses a housing 400 enclosing the network interface receiver, the electronic circuit, and the network interface transmitter, wherein the housing has a height of less than 10 mm, a width of less than 15 mm, and a length of less than 60 mm (page 7 paragraph 0085; noted the FPGA 400 include small form-factor housing supporting the measurements). Regarding to claim 12, Friedman discloses the electronic circuit 408 comprises an application-specific integrated circuit (page 6 paragraph 0080). Regarding to claim 13, Friedman discloses the electronic circuit 408 comprises a field-programmable gate array (page 6 paragraph 0080). Regarding to claim 14, the network interface receiver 404 comprises an electrical network interface receiver; the network interface transmitter 406 comprises an electrical network interface transmitter (page 7 paragraph 0085; noted the network interfaces 404-406 includes physical layer module and physical coding sub-layer PCS module, which provide electrical transmission/reception); the network interface receiver 404 is coupled to the upstream network 104 with an electrical connector (pages 6-7 paragraph 0084; ports); and the network interface transmitter 406 is coupled to the protected device 420 with an electrical connector (pages 6-7 paragraph 0084; ports). Regarding to claim 15, the network interface receiver 404 comprises an optical network interface receiver (pages 6- 7 paragraph 0084-0085; noted the network interfaces 404-406 includes physical layer module supporting gigabit Ethernet, which used optical fiber); the network interface transmitter 406 comprises an electrical network interface transmitter (page 7 paragraph 0085; noted the network interfaces 404-406 includes physical layer module and physical coding sub-layer PCS module, which provide electrical transmission/reception); the network interface receiver 404 is coupled to the upstream network 104 with an optical connector (pages 6-7 paragraph 0084; ports); and the network interface transmitter 406 is coupled to the protected device 420 with an electrical connector (pages 6-7 paragraph 0084; ports). Regarding to claim 17, Friedman discloses the electronic circuit 408 is further statically configured in hardware to take account of a volume of packets of a predetermined type in the evaluation (pages 4-5 paragraph 0053). Regarding to claim 18, Friedman discloses a trusted network 104 (fig. 4) for connection to upstream (page 6 paragraph 0072) untrusted network 402, the trusted network comprising: a plurality of small form-factor pluggable modules (page 7 paragraph 0085) comprising: a network interface receiver 404 configured to receive a plurality of packets from the upstream network (pages 6-7 paragraph 0084); an electronic circuit 408 statically configured in hardware to extract a header of each received packet (page 7 paragraph 0087), evaluate each extracted header based on an access control ruleset (page 7 paragraph 0088; filter rules), and, based on the evaluation, pass a first portion of the received packets and discard a second portion of the received packets (page 7 paragraphs 0089-0090); a network interface transmitter 406 configured to transmit the first portion of the received packets (page 9 paragraph 0115); and a plurality of protected devices 102 (fig. 1), within the trusted network 104, and coupled to the network interface transmitter 406 of the plurality of small form-factor pluggable modules (page 3 paragraph 0036). Friedman fails to teach for the access control ruleset is static and predefined. However, Singhvi discloses a network device 100 (fig. 1) employing access control lists ACLs, wherein the ACLs include rules that are static and predefined (fig. 4B page 6 paragraph 0071). Thus, it would have been obvious to a person of ordinary skill in the art, before the effective filing date of the claimed invention, to arrange for static and predefined access control ruleset as taught by Singhvi into Friedman’s system to use as a default ACL ruleset when authentication server or administrator did not configure any ACL ruleset. Regarding to claim 19, Friedman discloses at least one of the plurality of connected devices comprises a router 202 (fig. 2 page 5 paragraph 0056) and at least another one of the plurality of connected devices comprises a customer premises equipment CPE unit 102(page 3 paragraph 0036). Regarding to claim 21, Friedman discloses the receiving step is carried out at no more than 10 Gbps (page 7 paragraph 0084). Regarding to claim 22, Friedman discloses the receiving is carried out using an optical connector pages 6-7 paragraph 0084-0085; noted the network interfaces 404-406 includes physical layer module supporting gigabit Ethernet, which used optical fiber) and the passing is carried out using an electrical connector transmitter (page 7 paragraph 0085; noted the network interfaces 404-406 includes physical layer module and physical coding sub-layer PCS module, which provide electrical transmission/reception) Regarding to claim 23, Friedman discloses the receiving is carried out using an electrical connector and the passing is carried out using an electrical connector transmitter (page 7 paragraph 0085; noted the network interfaces 404-406 includes physical layer module and physical coding sub-layer PCS module, which provide electrical transmission/reception). Allowable Subject Matter Claims 8 and 16 are allowed. Conclusion Applicant's amendment necessitated the new ground(s) of rejection presented in this Office action. Accordingly, THIS ACTION IS MADE FINAL. See MPEP § 706.07(a). Applicant is reminded of the extension of time policy as set forth in 37 CFR 1.136(a). A shortened statutory period for reply to this final action is set to expire THREE MONTHS from the mailing date of this action. In the event a first reply is filed within TWO MONTHS of the mailing date of this final action and the advisory action is not mailed until after the end of the THREE-MONTH shortened statutory period, then the shortened statutory period will expire on the date the advisory action is mailed, and any nonprovisional extension fee (37 CFR 1.17(a)) pursuant to 37 CFR 1.136(a) will be calculated from the mailing date of the advisory action. In no event, however, will the statutory period for reply expire later than SIX MONTHS from the mailing date of this final action. Any inquiry concerning this communication or earlier communications from the examiner should be directed to Duc T Duong whose telephone number is (571)272-3122. The examiner can normally be reached Mon-Fri; 9am-6pm. Examiner interviews are available via telephone, in-person, and video conferencing using a USPTO supplied web-based collaboration tool. To schedule an interview, applicant is encouraged to use the USPTO Automated Interview Request (AIR) at http://www.uspto.gov/interviewpractice. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Hassan Phillips can be reached at (571)272-3940. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of published or unpublished applications may be obtained from Patent Center. Unpublished application information in Patent Center is available to registered users. To file and manage patent submissions in Patent Center, visit: https://patentcenter.uspto.gov. Visit https://www.uspto.gov/patents/apply/patent-center for more information about Patent Center and https://www.uspto.gov/patents/docx for information about filing in DOCX format. For additional questions, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /DUC T DUONG/Primary Examiner, Art Unit 2467
Read full office action

Prosecution Timeline

Aug 23, 2023
Application Filed
Oct 21, 2025
Non-Final Rejection mailed — §103
Jan 05, 2026
Applicant Interview (Telephonic)
Jan 06, 2026
Examiner Interview Summary
Jan 19, 2026
Response Filed
Mar 27, 2026
Final Rejection mailed — §103
May 26, 2026
Applicant Interview (Telephonic)
May 26, 2026
Examiner Interview Summary

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Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

3-4
Expected OA Rounds
89%
Grant Probability
91%
With Interview (+2.0%)
2y 10m (~0m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 759 resolved cases by this examiner. Grant probability derived from career allowance rate.

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