Prosecution Insights
Last updated: July 17, 2026
Application No. 18/861,684

OPTICAL TRANSMISSION DEVICE, OPTICAL COMMUNICATION SYSTEM AND OPTICAL TRANSMISSION METHOD

Non-Final OA §102
Filed
Oct 30, 2024
Priority
May 10, 2022 — nonprovisional of PCTJP2022019832
Examiner
PHAN, HANH
Art Unit
Tech Center
Assignee
Nippon Telegraph and Telephone Corporation
OA Round
1 (Non-Final)
89%
Grant Probability
Favorable
1-2
OA Rounds
7m
Est. Remaining
95%
With Interview

Examiner Intelligence

Grants 89% — above average
89%
Career Allowance Rate
1022 granted / 1152 resolved
+28.7% vs TC avg
Moderate +7% lift
Without
With
+6.6%
Interview Lift
resolved cases with interview
Typical timeline
2y 3m
Avg Prosecution
18 currently pending
Career history
1164
Total Applications
across all art units

Statute-Specific Performance

§101
1.5%
-38.5% vs TC avg
§103
58.5%
+18.5% vs TC avg
§102
22.7%
-17.3% vs TC avg
§112
3.8%
-36.2% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1152 resolved cases

Office Action

§102
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 . Claim Rejections - 35 USC § 102 The following is a quotation of the appropriate paragraphs of 35 U.S.C. 102 that form the basis for the rejections under this section made in this Office action: A person shall be entitled to a patent unless – (a)(1) the claimed invention was patented, described in a printed publication, or in public use, on sale, or otherwise available to the public before the effective filing date of the claimed invention. Claims 1 and 4 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Fujiwara et al “Performance Evaluation of CPFSK Transmitters for TDM-Based Digital Coherent PON Upstream”, cited by applicant. Regarding claims 1 and 4, referring to Figure 1, Fujiwara et al teaches an optical transmission device (i.e., Burst mode CPFSK transmitter, Fig. 1) comprising: a modulation signal generator (i.e., Fig. 1) configured to generation unit that generates generate an intensity modulation signal and a continuous phase frequency shift keying (CPFSK) signal; a light source (i.e., light source DFB-LD, Fig. 1) configured to that outputs output a signal modulated by the CPFSK signal; and an intensity modulator (i.e., EA modulator, Fig. 1) configured to modulation unit that performs perform intensity modulation for canceling an intensity modulation component generated by modulation by the CPFSK signal, and intensity modulation by the intensity modulation signal, on the signal output from the light source (i.e., Fig. 1, see under section Burst mode CPFSK transmitter, and see under conclusion section). Allowable Subject Matter Claim 3 is objected to as being dependent upon a rejected base claim, but would be allowable if rewritten in independent form including all of the limitations of the base claim and any intervening claims. Claim 2 is allowed. The following is an examiner’s statement of reasons for allowance: Claim 2 is allowable because Fujiwara et al, Kawanishi et al (US Patent No. 7,957,653), and Kim et al (US Patent No. 7,450,860), takes alone or in combination, fails to teach an optical transmission device including: a modulation signal generator configured to generate an intensity modulation signal and a continuous phase frequency shift keying (CPFSK) signal; a light source configured to output a signal modulated by the CPFSK signal; and an intensity modulator configured to perform intensity modulation for canceling an intensity modulation component generated by modulation by the CPFSK signal, and intensity modulation by the intensity modulation signal, on the signal output from the light source; and an optical reception device including: a receiver configured to perform polarization separation and phase separation on a signal received from the optical transmission device; and a signal processor configured to decode the intensity modulation signal and the CPFSK signal on a basis of signals subjected to the polarization separation and the phase separation. Any comments considered necessary by applicant must be submitted no later than the payment of the issue fee and, to avoid processing delays, should preferably accompany the issue fee. Such submissions should be clearly labeled “Comments on Statement of Reasons for Allowance.” Conclusion 7. The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Kananishi et al (US Patent No. 7,957,653) discloses phase control optical FSK modulator. Kim et al (US Patent No. 7,450,860) discloses apparatus and method for frequyency shift keying optical transmission. 8. Any inquiry concerning this communication or earlier communications from the examiner should be directed to Hanh Phan whose telephone number is (571)272- 3035. If attempts to reach the examiner by telephone are unsuccessful the examiner's supervisor, Kenneth Vanderpuye, can be reached on (571)272-3078. The fax phone number for the organization where this application or proceeding is assigned is (571)273-8300. Any inquiry of a general nature or relating to the status of this application or proceeding should be directed to the receptionist whose telephone number is (703)305-4700. /HANH PHAN/Primary Examiner, Art Unit 2634
Read full office action

Prosecution Timeline

Oct 30, 2024
Application Filed
Jun 23, 2026
Non-Final Rejection mailed — §102 (current)

Precedent Cases

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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
89%
Grant Probability
95%
With Interview (+6.6%)
2y 3m (~7m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1152 resolved cases by this examiner. Grant probability derived from career allowance rate.

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