Prosecution Insights
Last updated: April 19, 2026
Application No. 17/999,562

OPTICAL AMPLIFICATION APPARATUS FOR A SUBMARINE OPTICAL AMPLIFIER AND RELATED OPTICAL AMPLIFIER

Non-Final OA §103§112
Filed
Nov 22, 2022
Examiner
ROSARIO BENITEZ, GUSTAVO A
Art Unit
2838
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Subphoton S R L
OA Round
1 (Non-Final)
81%
Grant Probability
Favorable
1-2
OA Rounds
2y 9m
To Grant
99%
With Interview

Examiner Intelligence

Grants 81% — above average
81%
Career Allow Rate
597 granted / 733 resolved
+13.4% vs TC avg
Strong +25% interview lift
Without
With
+25.3%
Interview Lift
resolved cases with interview
Typical timeline
2y 9m
Avg Prosecution
39 currently pending
Career history
772
Total Applications
across all art units

Statute-Specific Performance

§101
0.5%
-39.5% vs TC avg
§103
49.3%
+9.3% vs TC avg
§102
28.1%
-11.9% vs TC avg
§112
21.0%
-19.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 733 resolved cases

Office Action

§103 §112
ingDETAILED ACTION This office action is in response to the application filed on 11/22/2022. 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 . Information Disclosure Statement The information disclosure statement (IDS) submitted on 11/22/2022 has been considered by the examiner. The information disclosure statement filed 11/22/2022 fails to comply with 37 CFR 1.98(a)(2), which requires a legible copy of each cited foreign patent document; each non-patent literature publication or that portion which caused it to be listed; and all other information or that portion which caused it to be listed. It has been placed in the application file, but the information referred to therein has not been considered. Drawings The drawings are objected to under 37 CFR 1.83(a). The drawings must show every feature of the invention specified in claim 1. Therefore, the “a second reference signal” must be shown or the feature(s) canceled from the claim(s). No new matter should be entered. Corrected drawing sheets in compliance with 37 CFR 1.121(d) are required in reply to the Office action to avoid abandonment of the application. Any amended replacement drawing sheet should include all of the figures appearing on the immediate prior version of the sheet, even if only one figure is being amended. The figure or figure number of an amended drawing should not be labeled as “amended.” If a drawing figure is to be canceled, the appropriate figure must be removed from the replacement sheet, and where necessary, the remaining figures must be renumbered and appropriate changes made to the brief description of the several views of the drawings for consistency. Additional replacement sheets may be necessary to show the renumbering of the remaining figures. Each drawing sheet submitted after the filing date of an application must be labeled in the top margin as either “Replacement Sheet” or “New Sheet” pursuant to 37 CFR 1.121(d). If the changes are not accepted by the examiner, the applicant will be notified and informed of any required corrective action in the next Office action. The objection to the drawings will not be held in abeyance. Figure 1 should be designated by a legend such as --Prior Art-- because only that which is old is illustrated. See MPEP § 608.02(g). Corrected drawings in compliance with 37 CFR 1.121(d) are required in reply to the Office action to avoid abandonment of the application. The replacement sheet(s) should be labeled “Replacement Sheet” in the page header (as per 37 CFR 1.84(c)) so as not to obstruct any portion of the drawing figures. If the changes are not accepted by the examiner, the applicant will be notified and informed of any required corrective action in the next Office action. The objection to the drawings will not be held in abeyance. Specification Applicant is reminded of the proper language and format for an abstract of the disclosure. The abstract should be in narrative form and generally limited to a single paragraph on a separate sheet within the range of 50 to 150 words in length. The abstract should describe the disclosure sufficiently to assist readers in deciding whether there is a need for consulting the full patent text for details. The language should be clear and concise and should not repeat information given in the title. It should avoid using phrases which can be implied, such as, “The disclosure concerns,” “The disclosure defined by this invention,” “The disclosure describes,” etc. In addition, the form and legal phraseology often used in patent claims, such as “means” and “said,” should be avoided. The specification has not been checked to the extent necessary to determine the presence of all possible minor errors. Applicant’s cooperation is requested in correcting any errors of which applicant may become aware in the specification. Claim Objections Claim 10 is objected to because of the following informalities: Claim 10 lines 1 and 4 recite “A submarine optical amplifier” and “an optical amplification apparatus” this should be changed “The Submarine optical amplifier” and “the optical amplification apparatus”. Appropriate correction is required. Claim Rejections - 35 USC § 112 The following is a quotation of 35 U.S.C. 112(b): (b) CONCLUSION.—The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the inventor or a joint inventor regards as the invention. The following is a quotation of 35 U.S.C. 112 (pre-AIA ), second paragraph: The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the applicant regards as his invention. Claims 1-10 are rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor (or for applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention. Claim 1 recites “at a second respective input port, a second reference signal”. However, paragraph 73 of the PG PUB mentions “second differential amplifier 9 connected to the first differential amplifier 8 for receiving at a respective first input port, for example the inverting port, the first error signal 101 and at a respective second input port, for example the non-inverting port, the reference signal 201.” Therefore, it is not clear if the first reference signal and the second reference signal are the same or different. For purposes of examination the limitations are going to be interpreted as either the same or different. Claims 2-10 are also rejected to under 35 U.S.C. 112(b), for being dependent on a rejected claim under 35 U.S.C. 112(b). 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. Claim(s) 1, 4-5 and 10 is/are rejected under 35 U.S.C. 103 as being unpatentable over Zhen CN 105099149 in view of Applicant Admitted Prior Art (AAPA). Regarding Claim 1, Zhen teaches (Figures 3-4) wherein the DC/DC converter (Fig. 3) comprises a first commutator (Mn) and a pulse modulator (controller at Fig. 3) connected to the first commutator for cyclically switching with a duty cycle the first commutator between a closing configuration (Fig. 4), in which it can be passed thought by a current (current passing through the switch), and an opening configuration, in which it cannot be passed thought by the current, wherein the DC/DC converter comprises a retroaction circuit (OP1 and OTA2) comprising: a first differential amplifier (OP1) connected for receiving, at a first input port, a first signal representative of at least a voltage at output from the DC/DC converter (Vfb) and at input the system (load) and, at a second input port, a first reference signal (Vref) wherein the first differential amplifier is structured for generating a first error signal representative of a difference between the first signal and the first reference signal (output of OP1); a second differential amplifier (OTA2) connected to the first differential amplifier (OP1) for receiving, at a first respective input port (output OP1), the first error signal and, at a second respective input port (Vref), a second reference signal wherein the second differential amplifier is structured for generating a second error signal (output of OTA2) representative of a difference between the first error signal and the second reference signal (inputs of OTA2), wherein the second error signal is proportional to a deviation of the voltage at output from the DC/DC converter with respect to a nominal working voltage (rated voltage of load or Vref) of the system (load), wherein the first input port of the first differential amplifier and the first respective input port of the second differential amplifier are concordant ports (Vref), and wherein the pulse modulator (controller) is connected to the second differential amplifier for receiving the second error signal and for regulating the duty cycle as a function of the second error signal (with the control operation). (See par. 1-5 of the specification) Zhen does not teach an optical amplification apparatus for a submarine optical amplifier, wherein the optical amplification apparatus comprises an optical amplification system, comprising at least one active component, and a DC/DC converter connected to supply the optical amplification system. AAPA teaches (Figure 1) an optical amplification apparatus (300) for a submarine optical amplifier (par. 5), wherein the optical amplification apparatus comprises an optical amplification system (302), comprising at least one active component (inside 302,m par. 5), and a DC/DC converter (303) connected to supply the optical amplification system. (For Example: Par. 5-8) It would have been obvious to one of ordinary skill in the art before the effective filling date of the claimed invention to modify the circuit of Zhen to include an optical amplification apparatus for a submarine optical amplifier, wherein the optical amplification apparatus comprises an optical amplification system, comprising at least one active component, and a DC/DC converter connected to supply the optical amplification system as taught by AAPA to provide power to the desired load. Regarding Claims 4-5, Zhen teaches (Figures 3-4) wherein the first commutator (MN) is selected in the group: MOSFET transistors (see fig. 3), IGBT transistors or BJT transistors; wherein the pulse modulator (controller) is selected in the group: pulse width modulators (see fig. 4) or pulse frequency modulators. (See par. 1-5 of the specification) Regarding Claim 10, Zhen teaches (Figures 3-4) the system. Zhen does not teach the submarine optical amplifier comprising: a vessel having a housing cavity; and an optical amplification apparatus according to claim 1 housed in the housing cavity. AAPA teaches the submarine optical amplifier comprising: a vessel having a housing cavity; and an optical amplification apparatus according to claim 1 housed in the housing cavity (see par. 4). It would have been obvious to one of ordinary skill in the art before the effective filling date of the claimed invention to modify the circuit of Zhen to include the submarine optical amplifier comprising: a vessel having a housing cavity; and an optical amplification apparatus according to claim 1 housed in the housing cavity, as taught by AAPA to provide power to the desired load. Claim(s) 2-3 is/are rejected under 35 U.S.C. 103 as being unpatentable over Zhen CN 105099149 in view of Applicant Admitted Prior Art (AAPA) and further in view of Hawkes USRE3780. Regarding Claim 2, Zhen teaches (Figures 3-4) the system. Zhen does not teach wherein the first signal is representative of a sum of the voltage at output from the DC/DC converter and of a voltage at input into the DC/DC converter. Hawkes teaches (Figures 4) wherein the first signal (sent to 128) is representative of a sum of the voltage at output from the DC/DC converter (Vout) and of a voltage at input into the DC/DC converter (VISense). (See Col. 6 lines 40-54) It would have been obvious to one of ordinary skill in the art before the effective filling date of the claimed invention to modify the circuit of Zhen to include wherein the first signal is representative of a sum of the voltage at output from the DC/DC converter and of a voltage at input into the DC/DC converter, as taught by Hawkes to improve transient operation of the system. Regarding Claim 3, Zhen teaches (Figures 3-4) the system. Zhen does not teach wherein retroaction circuit comprises an adder connected to the first differential amplifier for receiving, at a first input port, a second signal representative of the voltage at output from the DC/DC converter and, at a second input port, a third signal representative of a voltage at input into the DC/DC converter (I), and wherein said, wherein the adder is structured to operate a sum of the second and third signal and generate the first signal as a function of the sum of the second and third signal. Hawkes teaches (Figures 4) wherein retroaction circuit (at Fig. 4a) comprises an adder (R1-R3 and 126) connected to the first differential amplifier (128) for receiving, at a first input port, a second signal representative of the voltage at output from the DC/DC converter (Vout) and, at a second input port, a third signal representative of a voltage at input into the DC/DC converter (VIsense), and wherein said, wherein the adder is structured to operate a sum of the second and third signal and generate the first signal as a function of the sum of the second and third signal (sent to 128). (See Col. 6 lines 40-54) It would have been obvious to one of ordinary skill in the art before the effective filling date of the claimed invention to modify the circuit of Zhen to include wherein retroaction circuit comprises an adder connected to the first differential amplifier for receiving, at a first input port, a second signal representative of the voltage at output from the DC/DC converter and, at a second input port, a third signal representative of a voltage at input into the DC/DC converter (I), and wherein said, wherein the adder is structured to operate a sum of the second and third signal and generate the first signal as a function of the sum of the second and third signal, as taught by Hawkes to improve transient operation of the system. Claim(s) 6-9 is/are rejected under 35 U.S.C. 103 as being unpatentable over Zhen CN 105099149 in view of Applicant Admitted Prior Art (AAPA) and further in view of Liang US 2020/0127565. Regarding Claim 6, Zhen as modified teaches (Figure 1 of AAPA) the optical amplification apparatus. Zhen does not teach wherein the DC/DC converter comprises an inductor connected upstream of the first commutator, wherein the inductor is structured for storing current when the first commutator is in the closing configuration and for supplying current when the first commutator is in the opening configuration. Liang teaches (Figure 4) wherein the DC/DC converter comprises an inductor (L1) connected upstream of the first commutator (M1), wherein the inductor is structured for storing current when the first commutator is in the closing configuration (M1 closed) and for supplying current when the first commutator is in the opening configuration (M1 open). (For example: Par. 31) It would have been obvious to one of ordinary skill in the art before the effective filling date of the claimed invention to modify the circuit of Zhen to include wherein the DC/DC converter comprises an inductor connected upstream of the first commutator, wherein the inductor is structured for storing current when the first commutator is in the closing configuration and for supplying current when the first commutator is in the opening configuration, as taught by Liang to provide power to the level of output to the load. Regarding Claim 7, Zhen teaches (Figure 3-4) the system. Zhen does not teach wherein the DC/DC converter comprises a second commutator connected downstream of the first commutator, wherein the second commutator is structured for allowing a current passage towards said optical amplification system when the first commutator is in the opening configuration and for blocking a current return towards the first commutator when the first commutator is in the closing configuration, wherein the second commutator is selected in the group: classic diodes, Schottky diodes, MOSFET transistors. Liang teaches (Figure 4) wherein the DC/DC converter (Fig. 4) comprises a second commutator (D1) connected downstream of the first commutator (M1), wherein the second commutator (D1) is structured for allowing a current passage towards said system (load) when the first commutator (M1) is in the opening configuration and for blocking a current return towards (D1 not conducting) the first commutator when the first commutator is in the closing configuration, wherein the second commutator is selected in the group: classic diodes (D1), Schottky diodes, MOSFET transistors. (For example: Par. 31) It would have been obvious to one of ordinary skill in the art before the effective filling date of the claimed invention to modify the circuit of Zhen to include wherein the DC/DC converter comprises a second commutator connected downstream of the first commutator, wherein the second commutator is structured for allowing a current passage towards said optical amplification system when the first commutator is in the opening configuration and for blocking a current return towards the first commutator when the first commutator is in the closing configuration, wherein the second commutator is selected in the group: classic diodes, Schottky diodes, MOSFET transistors, as taught by Liang to provide power to the level of output to the load. Regarding Claim 8, Zhen teaches (Figures 3-4) the system. Zhen does not teach wherein the DC/DC converter comprises a second commutator connected downstream of the first commutator and an accumulator connected downstream of the second commutator, wherein the accumulator is structured for storing current when the first commutator is in the opening configuration and for supplying current when the first commutator is in the closing configuration, wherein the accumulator is a capacitor. Liang teaches (Figure 4) wherein the DC/DC converter (Fig. 4) comprises a second commutator (D1) connected downstream of the first commutator (M1) and an accumulator (Cout) connected downstream of the second commutator, wherein the accumulator is structured for storing current when the first commutator (M1) is in the opening configuration (M1 open) and for supplying current when the first commutator is in the closing configuration (M1 closed), wherein the accumulator is a capacitor (Cout). (For example: Par. 31) It would have been obvious to one of ordinary skill in the art before the effective filling date of the claimed invention to modify the circuit of Zhen to include wherein the DC/DC converter comprises a second commutator connected downstream of the first commutator and an accumulator connected downstream of the second commutator, wherein the accumulator is structured for storing current when the first commutator is in the opening configuration and for supplying current when the first commutator is in the closing configuration, wherein the accumulator is a capacitor, as taught by Liang to provide power to the level of output to the load. Regarding Claim 9, Zhen teaches (Figures 3-4) the system. Zhen does not teach an equalizing filter connected upstream of the DC/DC converter for levelling a current at input into the DC/DC converter and wherein the equalizing filter is selected in the group: capacitors, low-pass filters. Liang teaches (Figure 4) an equalizing filter (Cin) connected upstream of the DC/DC converter (at fig. 4) for levelling a current at input into the DC/DC converter and wherein the equalizing filter is selected in the group: capacitors (Cin), low-pass filters. (For example: Par. 31) It would have been obvious to one of ordinary skill in the art before the effective filling date of the claimed invention to modify the circuit of Zhen to include an equalizing filter connected upstream of the DC/DC converter for levelling a current at input into the DC/DC converter and wherein the equalizing filter is selected in the group: capacitors, low-pass filters, as taught by Liang to provide power to the level of output to the load. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to GUSTAVO A ROSARIO-BENITEZ whose telephone number is (571)270-7888. The examiner can normally be reached M-F 9AM-5PM. 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, MONICA LEWIS can be reached at 5712721838. 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. /GUSTAVO A ROSARIO-BENITEZ/ Primary Examiner, Art Unit 2838
Read full office action

Prosecution Timeline

Nov 22, 2022
Application Filed
Jan 14, 2026
Non-Final Rejection — §103, §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12603586
Insulated-Gate Bipolar Transistor (IGBT) Rectifier for Charging Ultra-Capacitors
2y 5m to grant Granted Apr 14, 2026
Patent 12587083
INTERNAL RAMP COMPENSATION FOR CONSTANT ON-TIME BUCK CONVERTER
2y 5m to grant Granted Mar 24, 2026
Patent 12573838
AUTONOMOUS DETECTION OF RAPID SHUTDOWN CONDITION
2y 5m to grant Granted Mar 10, 2026
Patent 12567791
DEVICE AND METHOD FOR DETECTING MAGNITUDE OF INPUT CURRENT OF SWITCHING CONVERTER
2y 5m to grant Granted Mar 03, 2026
Patent 12562644
VOLTAGE STABILIZING CIRCUIT, VOLTAGE STABILIZING METHOD, CHARGING CIRCUIT, AND ELECTRONIC EQUIPMENT
2y 5m to grant Granted Feb 24, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

AI Strategy Recommendation

Get an AI-powered prosecution strategy using examiner precedents, rejection analysis, and claim mapping.
Powered by AI — typically takes 5-10 seconds

Prosecution Projections

1-2
Expected OA Rounds
81%
Grant Probability
99%
With Interview (+25.3%)
2y 9m
Median Time to Grant
Low
PTA Risk
Based on 733 resolved cases by this examiner. Grant probability derived from career allow rate.

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month