Prosecution Insights
Last updated: May 29, 2026
Application No. 18/266,950

ANTIFOG COMPOSITIONS AND RELATED METHODS

Final Rejection §103
Filed
Jun 13, 2023
Priority
Dec 16, 2020 — provisional 63/125,999 +1 more
Examiner
NERANGIS, VICKEY M
Art Unit
1763
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Lubrizol Advanced Materials Inc.
OA Round
2 (Final)
56%
Grant Probability
Moderate
3-4
OA Rounds
2m
Est. Remaining
85%
With Interview

Examiner Intelligence

Grants 56% of resolved cases
56%
Career Allowance Rate
654 granted / 1161 resolved
-8.7% vs TC avg
Strong +29% interview lift
Without
With
+28.9%
Interview Lift
resolved cases with interview
Typical timeline
3y 2m
Avg Prosecution
51 currently pending
Career history
1222
Total Applications
across all art units

Statute-Specific Performance

§101
0.2%
-39.8% vs TC avg
§103
81.1%
+41.1% vs TC avg
§102
5.3%
-34.7% vs TC avg
§112
3.3%
-36.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1161 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 . Response to Amendment All outstanding rejections, except for those maintained below, are withdrawn in light of applicant’s amendment filed on 1/27/2026. The text of those sections of Title 35, U.S. Code not included in this action can be found in a prior office action. No new grounds of rejection are set forth below. Thus, the following action is properly made final. Claim Rejections - 35 USC § 103 Claims 1-7 and 11-16 are rejected under 35 U.S.C. 103 as being unpatentable over Iwazumi (US 8,642,180). The rejection is adequately set forth in paragraph 4 of Office action mailed on 12/23/2025 and is incorporated here by reference. Claims 9 and 10 are rejected under 35 U.S.C. 103 as being unpatentable over Iwazumi (US 8,642,180) in view of Fox, Jr. (US 5,019,096). The rejection is adequately set forth in paragraph 5 of Office action mailed on 12/23/2025 and is incorporated here by reference. Response to Arguments Applicant's arguments filed 1/27/2026 have been fully considered but they are not persuasive. Specifically, applicant argues that Iwazumi does not fairly disclose a number-average molecular weight (Mn) of 200-900 g/mol because Iwazumi does not recognize the technical advantage regarding light scattering. While the same motivation regarding light scattering is not taught by Iwazumi, case law holds that “[a]s long as some motivation or suggestion to combine the references is provided by the prior art taken as a whole, the law does not require that the references be combined for the reasons contemplated by the inventor.” In re Beattie, 974 F.2d 1309, 132 (Fed. Cir. 1992). Iwazumi Mn of 500-6000 that overlaps with claimed range. It is well settled that where the prior art describes the components of a claimed compound or compositions in concentrations within or overlapping the claimed concentrations a prima facie case of obviousness is established. See In re Harris, 409 F.3d 1339, 1343, 74 USPQ2d 1951, 1953 (Fed. Cir 2005); In re Peterson, 315 F.3d 1325, 1329, 65 USPQ 2d 1379, 1382 (Fed. Cir. 1997); In re Woodruff, 919 F.2d 1575, 1578 16 USPQ2d 1934, 1936-37 (CCPA 1990); In re Malagari, 499 F.2d 1297, 1303, 182 USPQ 549, 553 (CCPA 1974). Therefore, Iwazumi clearly suggests using Mn of 500-900 g/mol. The data of the specification as originally filed has been considered and no support for criticality of the Mn has been established. Inventive examples include Mn of 650, and comparative examples include Mn of 2000. While the specification teaches generally that low-molecular-weight polyols may hinder the coalescing of hard segments (paragraph 0078), the examples only provide properties of gloss over exposure time (where there is no difference between inventive and comparative examples) and abrasion resistance. No data shows a relationship between molecular weight and light scattering. Conclusion 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 VICKEY NERANGIS whose telephone number is (571)272-2701. The examiner can normally be reached 8:30 am - 5:00 pm EST, Monday - Friday. 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. /VICKEY NERANGIS/Primary Examiner, Art Unit 1763 vn
Read full office action

Prosecution Timeline

Jun 13, 2023
Application Filed
Dec 23, 2025
Non-Final Rejection mailed — §103
Jan 27, 2026
Response Filed
Mar 17, 2026
Final Rejection mailed — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12637567
STYRENE-BASED RESIN COMPOSITION
4y 5m to grant Granted May 26, 2026
Patent 12630736
NOVEL NANOEMULSIONS, METHODS OF THEIR PRODUCTION AND RELATED USES AND PRODUCTS
4y 7m to grant Granted May 19, 2026
Patent 12617945
THERMOPLASTIC COMPOSITION
5y 7m to grant Granted May 05, 2026
Patent 12617950
POLYMER PARTICLES COMPRISING LIGNIN AND RELATED ADDITIVE MANUFACTURING METHODS
4y 6m to grant Granted May 05, 2026
Patent 12606672
CURABLE COMPOSITION
3y 10m to grant Granted Apr 21, 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
56%
Grant Probability
85%
With Interview (+28.9%)
3y 2m (~2m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 1161 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