Prosecution Insights
Last updated: August 17, 2026
Application No. 18/814,101

SYSTEMS AND METHODS FOR FULL DUPLEX DOCSIS (FDX) AMPLIFIER AUTOMATIC CONFIGURATION

Non-Final OA §103
Filed
Aug 23, 2024
Priority
Aug 25, 2023 — provisional 63/578,898
Examiner
MERED, HABTE
Art Unit
Tech Center
Assignee
Comcast Cable Communications LLC
OA Round
1 (Non-Final)
84%
Grant Probability
Favorable
1-2
OA Rounds
1y 0m
Est. Remaining
97%
With Interview

Examiner Intelligence

Grants 84% — above average
84%
Career Allowance Rate
665 granted / 787 resolved
+24.5% vs TC avg
Moderate +13% lift
Without
With
+12.6%
Interview Lift
resolved cases with interview
Typical timeline
2y 12m
Avg Prosecution
18 currently pending
Career history
798
Total Applications
across all art units

Statute-Specific Performance

§101
7.0%
-33.0% vs TC avg
§103
52.8%
+12.8% vs TC avg
§102
16.4%
-23.6% vs TC avg
§112
12.3%
-27.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 787 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 . The instant communication is in response to communication filed on 08/23/2024. Claims 1-21 are pending of which claims 1, 8, and 16 are independent. Internet Communications Applicant is encouraged to submit a written authorization for Internet communications (PTO/SB/439, http://www.uspto.gov/sites/default/files/documents/sb0439.pdf) in the instant patent application to authorize the examiner to communicate with the applicant via email. The authorization will allow the examiner to better practice compact prosecution. The written authorization can be submitted via one of the following methods only: (1) Central Fax which can be found in the Conclusion section of this Office action; (2) regular postal mail; (3) EFS WEB; or (4) the service window on the Alexandria campus. EFS web is the recommended way to submit the form since this allows the form to be entered into the file wrapper within the same day (system dependent). Written authorization submitted via other methods, such as direct fax to the examiner or email, will not be accepted. See MPEP § 502.03. 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. The factual inquiries for establishing a background for determining obviousness under 35 U.S.C. 103 are summarized as follows: 1. Determining the scope and contents of the prior art. 2. Ascertaining the differences between the prior art and the claims at issue. 3. Resolving the level of ordinary skill in the pertinent art. 4. Considering objective evidence present in the application indicating obviousness or nonobviousness. Claim(s) 1-7 and 16-21 is/are rejected under 35 U.S.C. 103 as being unpatentable over Schemmann et al (US 20230403128 A1, here in after referred to as D1) in view of Bowler et al (US 20260072583 A1). Regarding claim 1, D1 discloses a method (i.e. Figs. 1-3) comprising: receiving, from at least one of a node (Fig. 1A, 2A, 2B FDX Node 102) or an upstream amplifier (Fig. 2A and 2B FDX Amplifier 104 and Fig. 3 FDX amplifier 302) , a downstream signal, wherein the first FDX amplifier is configured to modulate the downstream signal via at least one of the gain and the equalization associated with the one or more downstream signals; (See Fig. 2B first FDX amplifier 104 receives downstream signal from FDX node 102 and modulates the downstream signal through gain 314 of Fig. 3 – see at least paragraphs 22 and 31) sending, to a second FDX amplifier downstream of the first FDX amplifier, the modulated downstream signal; (See Fig. 2B the modulated downstream signal is sent to the second FDX amplifier 104 connected to the first FDX amplifier 104 via tap 112-4) receiving, from the second FDX amplifier, an upstream signal, wherein the first FDX amplifier is configured to modulate the upstream signal via at least one of the gain and the equalization associated with the one or more upstream signals; (From second FDX amplifier 104 an upstream signal modulated through gain 330 of Fig. 3 is sent in upstream direction to the first FDX amplifier 104 through tap 112-4. See paragraphs 23, 33, and 34) and sending, to the at least one of the node or the upstream amplifier, the modulated upstream signal. (See Fig. 2B the modulated upstream signal is sent to the first FDX amplifier 104 and FDX node 102 connected to the second FDX amplifier 104 via tap 112-4. See paragraphs 22-23 and 31-34) D1 fails to disclose configuring, via a configuration system associated with a first full duplex DOCSIS (FDX) amplifier, at least one of a gain and an equalization associated with one or more downstream signals received by the first FDX amplifier; and configuring, via the configuration system associated with the first FDX amplifier, at least one of a gain and an equalization associated with one or more upstream signals received by the first FDX amplifier. Bowler discloses, in the same endeavor, FDX amplifier for extended spectrum DOCSIS. Bowler further discloses configuring, via a configuration system associated with a first full duplex DOCSIS (FDX) amplifier (Fig. 1 system 10 with FDX amp 14 and paragraph 7), at least one of a gain and an equalization associated with one or more downstream signals received by the first FDX amplifier (Fig. 6 FDX AMP 100 paragraphs33-34, 38, and 44-45 at least one of a gain and an equalization associated with one or more downstream signals is configured. Note also in paragraph 42 that FDX AMP 100 modulates the gain so that the modulated output of the amplifier is what is needed to provide unity gain, given the adjacent span.); and configuring, via the configuration system associated with the first FDX amplifier, at least one of a gain and an equalization associated with one or more upstream signals received by the first FDX amplifier. (Fig. 6 FDX AMP 100 paragraphs 52-53 and 56-57 at least one of a gain and an equalization associated with one or more upstream signals is configured. Note also in paragraph 42 that FDX AMP 100 modulates the gain so that the modulated output of the amplifier is what is needed to provide unity gain, given the adjacent span.) In view of the above, having D1’s FDX amplifier and then given the well- established teaching of Bowler’s techniques for configuring gain and equalization, it would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention was made to modify D1’s FDX amplifier as taught by Bowler’s techniques for configuring gain and equalization, since Bowler states in paragraph 10 that the modification results in an improved system for amplification of signals to reduce noise or other degradations in the signal being amplified. Regarding claim 16, D1 discloses a method comprising: (Fig. 2B FDX Amplifier 104 between tap 112-1 and tap 112-4), at least one of an equalization or a gain associated with correcting at least one of a distortion or attenuation of a received signal, wherein the received signal comprises at least one of a downstream signal or an upstream signal; (See Fig. 2B first FDX amplifier 104 receives downstream signal from FDX node 102 and modulates the downstream signal through gain 314 of Fig. 3 – see at least paragraphs 22 and 31. From second FDX amplifier 104 an upstream signal modulated through gain 330 of Fig. 3 is sent in upstream direction to the first FDX amplifier 104 through tap 112-4. See paragraphs 23, 33, and 34) correcting, via the configured at least one equalization or gain, the received signal(Fig. 3 gain 330 and Fig. 3 314 provide the correction of the received signal); and causing sending the corrected received signal, wherein downstream signals are sent to a downstream FDX amplifier, and wherein upstream signals are sent to at least one of an upstream FDX amplifier or an upstream FDX node. (See Fig. 2B the modulated upstream signal is sent to the first FDX amplifier 104 and FDX node 102 connected to the second FDX amplifier 104 via tap 112-4. See paragraphs 22-23 and 31-34 and See Fig. 2B the modulated downstream signal is sent to the second FDX amplifier 104 connected to the first FDX amplifier 104 via tap 112-4) D1 fails to disclose configuring, via a configuration system associated with a first full duplex DOCSIS (FDX) amplifier at least one of an equalization or a gain associated with correcting at least one of a distortion or attenuation of a received signal. Bowler in the same endeavor, discloses configuring, via a configuration system associated with a first full duplex DOCSIS (FDX) amplifier at least one of an equalization or a gain associated with correcting at least one of a distortion or attenuation of a received signal. (Fig. 6 FDX AMP 100 paragraphs33-34, 38, and 44-45 at least one of a gain and an equalization associated with one or more downstream signals is configured. (Fig. 6 FDX AMP 100 paragraphs 52-53 and 56-57 at least one of a gain and an equalization associated with one or more upstream signals is configured. Note also in paragraph 42 that FDX AMP 100 modulates the gain so that the modulated output of the amplifier is what is needed to provide unity gain, given the adjacent span.) In view of the above, having D1’s FDX amplifier and then given the well- established teaching of Bowler’s techniques for configuring gain and equalization, it would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention was made to modify D1’s FDX amplifier as taught by Bowler’s techniques for configuring gain and equalization, since Bowler states in paragraph 10 that the modification results in an improved system for amplification of signals to reduce noise or other degradations in the signal being amplified. Regarding claim 2, D1 modified by Bowler discloses the method of claim 1, D1 further discloses wherein modulating the upstream signal via the at least one of the gain and the equalization further comprises reducing, via an echo canceler, an echo of the downstream signal. (Per paragraphs 30 and 31 D1 discloses the gain and equalization comprises an echo canceler) Regarding claim 3, D1 modified by Bowler discloses the method of claim 2, D1 further disclose wherein the echo of the downstream signal comprises a reflection of the downstream signal in the upstream signal. (Per paragraphs 30 and 31 D1 discloses the gain and equalization comprises an echo canceler) Regarding claim 4, D1 modified by Bowler discloses the method of claim 1, D1 further discloses wherein the configuration system comprises a system on chip component of the first FDX amplifier. (i.e. D1 Fig. 3 is system on chip) Regarding claim 5, D1 modified by Bowler discloses the method of claim 1, D1 further discloses wherein the configuration system digitizes analog signals from the FDX amplifier via an analog to digital converter, and wherein the configuration system outputs, to the FDX amplifier, analog signals via a digital to analog converter. (See paragraphs 4, 18, 20, 21-25 on analog to digital converter and digital to analog converter in the paths of the FDX amplifier) Regarding claim 6, D1 modified by Bowler discloses the method of claim 1, D1 further discloses, wherein the downstream signal and the upstream signal occupy at least partially overlapping portions of a frequency band. (See Paragraph 33 and abstract of D1 where upstream and downstream share same frequency in full duplex operation such as FDX) Regarding claim 7, D1 modified by Bowler discloses the method of claim 6, D1 further discloses, wherein the downstream signal occupies at least a portion of the frequency band from substantially 100 megahertz to substantially 1.2 gigahertz, and wherein the upstream signal occupies at least a portion of the frequency band from substantially 8 megahertz to 700 megahertz. (See D1 paragraph 16 upstream 5-85 MHZ and downstream 108-834 MHZ of full bandwidth of 1.28 GHZ in paragraph 31) Regarding claim 17, D1 modified by Bowler discloses the method of claim 6, D1 The method of claim 16, wherein the downstream FDX amplifier is configured to apply a further correction to the downstream signal based on at least one of a distortion or an attenuation associated with the sending the signal from the first FDX amplifier to the downstream FDX amplifier. (See D1 Fig. 3 gain/attenuator 330 and 314 doing correction in upstream and downstream direction.) Regarding claim 18, claim 18 is rejected in the same scope as claim 5. Regarding claim 19, claim 19 is rejected in the same scope as claim 2. Regarding claim 20, claim 18 is rejected in the same scope as claim 6. Regarding claim 21, claim 18 is rejected in the same scope as claim 7. Allowable Subject Matter Claims 8-15 are allowed. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to HABTE MERED whose telephone number is (571)272-6046. The examiner can normally be reached Monday - Friday 12-10 PM EST. 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, Michael Thier can be reached at 5712722832. 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. /HABTE MERED/Primary Examiner, Art Unit 2474
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Prosecution Timeline

Aug 23, 2024
Application Filed
Aug 03, 2026
Non-Final Rejection mailed — §103 (current)

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

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Prosecution Projections

1-2
Expected OA Rounds
84%
Grant Probability
97%
With Interview (+12.6%)
2y 12m (~1y 0m remaining)
Median Time to Grant
Low
PTA Risk
Based on 787 resolved cases by this examiner. Grant probability derived from career allowance rate.

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