Prosecution Insights
Last updated: July 17, 2026
Application No. 18/030,836

COMPOSITION, AND OPTICAL MATERIAL AND LENS USING SAID COMPOSITION

Final Rejection §DP
Filed
Apr 07, 2023
Priority
Oct 19, 2020 — JP 2020-175419 +1 more
Examiner
FANG, SHANE
Art Unit
1766
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Mitsubishi Gas Chemical Company, Inc.
OA Round
2 (Final)
76%
Grant Probability
Favorable
3-4
OA Rounds
0m
Est. Remaining
95%
With Interview

Examiner Intelligence

Grants 76% — above average
76%
Career Allowance Rate
1148 granted / 1505 resolved
+11.3% vs TC avg
Strong +19% interview lift
Without
With
+18.8%
Interview Lift
resolved cases with interview
Typical timeline
2y 5m
Avg Prosecution
61 currently pending
Career history
1558
Total Applications
across all art units

Statute-Specific Performance

§101
0.3%
-39.7% vs TC avg
§103
73.0%
+33.0% vs TC avg
§102
14.4%
-25.6% vs TC avg
§112
5.3%
-34.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1505 resolved cases

Office Action

§DP
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 . DETAILED ACTION Response to Amendment The previous 103 rejection has been overcome by the amendment supported by the original claims. The text of those sections of Title 35, U.S. Code not included in this action can be found in a prior Office action. The previous restriction and ODP rejections have been maintained, but the position has been modified due to the amendment. The examiner urges filing a terminal disclaimer to overcome the ODP rejection. Claim Rejections - Double Patenting Claim(s) 1-2 and 4-6 is (are) rejected on the ground of nonstatutory obviousness-type double patenting as being unpatentable over claims 1-15 of US 12486352 ( 18/030847). ‘352 (claims 1-15) meets instant claims 1-2 and 4-6, because it discloses a composition comprising a polythiol, such as 1,2,6,7-tetramercapto-4-thiaheptane (out of 12 candidates), and 20-80 wt% (meets the loading of claim 5) of PNG media_image1.png 200 400 media_image1.png Greyscale that meets the formulae of claims 1-4. One having ordinary skill in the art would obviously recognize to prepare the claimed composition by selecting 1,2,6,7-tetramercapto-4-thiaheptane as the polythiol and m=3, because although many compositions are disclosed in the reference and therefore anticipation does not appear to be present, it has been held that the mere fact that a reference suggests a multitude of possible combinations does not in and of itself make any one of these combination less obvious (Merck & Co. v. Biocraft Laboratories, 874 F.2d 804, 10 USPQ2d 1843 (Fed. Cir. 1989). Allowable Subject Matter The following is an examiner's statement of reasons for allowance: Claim(s) 1-2 and 4-6 is(are) provisionally allowable over the closest prior art: Imagawa et al. (US 20180127549). As to claims 1-2 and 4-6, Omagawa (abs., claims, examples) discloses a composition for producing plastic lens (1) having excellent light and heat resistance (117, 124) comprising a polythiol of 1,2,6,7-tetramercapto-4-thiaheptane (the elected species of claim 6) and bis(β-epithiopropyl)sulfide (Ex.13 and 17-19, Table 1) at about 56 wt% (meets the range of claim 5) of the total mass of the composition. Omagawa (26-34) discloses bis(β-epithiopropyl)sulfide and 1,3- and 1,4-bis(β-epithiopropylthio)benzene (both meet the formulae in claims 1-4) are functionally equivalent episulfide compounds for producing plastic lens (1) having excellent light and heat resistance. However, Imagawa fails to teach the claimed formula of claim 1 requiring m=3. Therefore, claims 1-2 and 4-6 is(are) allowable in proviso the above ODP issue is resolved. 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”. Response to Arguments The argument for allowance of amended claims has been fully considered but not persuasive. Applicant’s argument pertaining to the ODP rejection is erroneous, because ODP is an obviousness type of rejection, and the case law cited, Merck & Co. v. Biocraft Laboratories, can be applied for the rejection. The examiner asserts the rejection has merely cited the claims of US 12486352 for the rejection, not the specification thereof. Therefore, the previous restriction and ODP rejections have been maintained, but the position has been modified due to the amendment. 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 extension fee 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 date of this final action. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to SHANE FANG whose telephone number is (571)270-7378. The examiner can normally be reached on Mon-Thurs. 8am-6pm. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Randy Gulakowski can be reached on 571.572.1302. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of an application may be obtained from the Patent Application Information Retrieval (PAIR) system. Status information for published applications may be obtained from either Private PAIR or Public PAIR. Status information for unpublished applications is available through Private PAIR only. For more information about the PAIR system, see http://pair-direct.uspto.gov. Should you have questions on access to the Private PAIR system, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative or access to the automated information system, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /SHANE FANG/Primary Examiner, Art Unit 1766
Read full office action

Prosecution Timeline

Apr 07, 2023
Application Filed
Feb 12, 2026
Non-Final Rejection mailed — §DP
May 06, 2026
Response Filed
Jun 26, 2026
Final Rejection mailed — §DP (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12668664
SULFUR COPOLYMER AND METHOD FOR PREPARING THE SAME
3y 3m to grant Granted Jun 30, 2026
Patent 12668662
METHOD FOR PRODUCING MALEIMIDE POLYETHYLENE GLYCOL LIPID
3y 3m to grant Granted Jun 30, 2026
Patent 12668917
Method to Manufacture a Recyclable Textile Product and the Said Product
3y 3m to grant Granted Jun 30, 2026
Patent 12643977
CURABLE RESIN, CURABLE RESIN COMPOSITION, AND CURED PRODUCT
3y 5m to grant Granted Jun 02, 2026
Patent 12643984
POLYSILAZANE COATING METHOD AND DEVICE
3y 5m to grant Granted Jun 02, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

Strategy Recommendation AI-generated — please review before filing

Get a prosecution strategy drawn from examiner precedents, rejection analysis, and claim mapping.
Typically takes 5-10 seconds — AI-generated, attorney review required before filing

Prosecution Projections

3-4
Expected OA Rounds
76%
Grant Probability
95%
With Interview (+18.8%)
2y 5m (~0m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 1505 resolved cases by this examiner. Grant probability derived from career allowance 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