Prosecution Insights
Last updated: July 05, 2026
Application No. 18/269,091

COMPOSITION, AND OPTICAL MATERIAL AND LENS USING SAME

Non-Final OA §103
Filed
Jun 22, 2023
Priority
Dec 25, 2020 — JP 2020-216080 +1 more
Examiner
LEONARD, MICHAEL L
Art Unit
1763
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Mitsubishi Gas Chemical Company, Inc.
OA Round
2 (Non-Final)
64%
Grant Probability
Moderate
2-3
OA Rounds
1m
Est. Remaining
72%
With Interview

Examiner Intelligence

Grants 64% of resolved cases
64%
Career Allowance Rate
850 granted / 1336 resolved
-1.4% vs TC avg
Moderate +8% lift
Without
With
+8.2%
Interview Lift
resolved cases with interview
Typical timeline
3y 1m
Avg Prosecution
44 currently pending
Career history
1391
Total Applications
across all art units

Statute-Specific Performance

§101
0.1%
-39.9% vs TC avg
§103
85.1%
+45.1% vs TC avg
§102
10.8%
-29.2% vs TC avg
§112
2.1%
-37.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1336 resolved cases

Office Action

§103
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 § 103 The text of those sections of Title 35, U.S. Code not included in this action can be found in a prior Office action. Claims 1-5 and 7-13 are rejected under 35 U.S.C. 103 as being unpatentable over U.S. Patent Pub. No. 2014/0357835 to Kamura et al. in view of U.S. Patent Pub. No. 2005/0154073 to Ishii et al. As to claims 1-3 and 12-13, Kamura discloses a polymerizable composition for optical materials comprising an episulfide component represented by the following: PNG media_image1.png 160 424 media_image1.png Greyscale A polythiol compound containing two or more SH-groups, such as m-, or p-xylylene dithiol (0095, Examples). Kamura further discloses aromatic dithiols including 1,2-dimercaptobenzene, 1,3-dimercaptobenzene, or 1,4-dimercaptobenzene as suitable alternatives to m-, or p-xylylene dithiol (0030). Further, within the same field of endeavor Ishii discloses polymerizable compositions for optical materials including 1,2-benzenedithiol, 1,3-benzenedithiol, or 1,4-benzenedithiol (0136). Therefore, a prima case of obviousness exists over the selected of aromatic containing dithiols. At the time of filing it would have been obvious to a person of ordinary skill in the art to substitute with type of aromatic dithiol (m-, or p-xylylene dithiol) with another type of aromatic dithiol 1,2-benzenedithiol, 1,3-benzenedithiol, or 1,4-benzenedithiol taught as suitable alternatives for the purpose of increasing the refractive index of the optical composition as taught in Ishii (0136). As to claim 4, Kamura discloses a content of aromatic dithiol compound that ranges from 3.5 to 10.0 parts by weight (Table 1, Examples 1-7). As to claim 5, Kamura discloses the addition of sulfur to the optical composition (Table 1, Examples 1-7). As to claims 7-9, Kamura discloses the addition of multi-functional polythiols and mixtures thereof including methanedithiol, 1,2-dimercaptoethane, etc. (0030). As to claims 9-10, Kamura discloses the addition of a polymerization catalyst such as 2-mercapto-1-methylimidazole (Examples, 0095). Claim 6 is rejected under 35 U.S.C. 103 as being unpatentable over U.S. Patent Pub. No. 2014/0357835 to Kamura et al. in view of U.S. Patent Pub. No. 2005/0154073 to Ishii et al. and U.S. Patent Pub. No. 2018/0127549 to Imagawa et al. (previously cited). As to claim 6, Kamura discloses a polymerizable composition for optical materials comprising an episulfide component represented by the following: PNG media_image1.png 160 424 media_image1.png Greyscale A polythiol compound containing two or more SH-groups, such as m-, or p-xylylene dithiol (0095, Examples). Kamura further discloses aromatic dithiols including 1,2-dimercaptobenzene, 1,3-dimercaptobenzene, or 1,4-dimercaptobenzene as suitable alternatives to m-, or p-xylylene dithiol (0030). Kamura does not expressly disclose the addition of 1,2,3,5,6-pentathiepane. However, within the same field of endeavor Imagawa discloses polymerizable compositions for optical materials that include 1,2,3,5,6-pentathiepane (0020). At the time of filing it would have been obvious to a person of ordinary skill in the art to add the 1,2,3,5,6-pentathiepane of Imagawa to the optical composition of Kamura to maintain a balance of improved refractive index and transparency (0025). Response to Arguments Applicant’s arguments with respect to claim(s) 1-13 have been considered but are moot because the new ground of rejection does not rely on any reference applied in the prior rejection of record for any teaching or matter specifically challenged in the argument. 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 MICHAEL L LEONARD whose telephone number is (571)270-7450. The examiner can normally be reached M - F 7:00-4:00. 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, Joseph Del Sole can be reached at 571-272-1130. 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. /MICHAEL L LEONARD/ Primary Examiner, Art Unit 1763
Read full office action

Prosecution Timeline

Jun 22, 2023
Application Filed
Jan 09, 2026
Non-Final Rejection mailed — §103
Mar 06, 2026
Response Filed
May 05, 2026
Final Rejection mailed — §103
Jun 22, 2026
Response after Non-Final Action

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

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Prosecution Projections

2-3
Expected OA Rounds
64%
Grant Probability
72%
With Interview (+8.2%)
3y 1m (~1m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 1336 resolved cases by this examiner. Grant probability derived from career allowance rate.

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