Prosecution Insights
Last updated: July 17, 2026
Application No. 18/682,231

ORGANIC-INORGANIC HYBRID INFRARED ABSORBING PARTICLES, INFRARED ABSORBING PARTICLE DISPERSION, AND METHOD OF PRODUCING ORGANIC-INORGANIC HYBRID INFRARED ABSORBING PARTICLES

Final Rejection §102
Filed
Feb 08, 2024
Priority
Aug 12, 2021 — JP 2021-131712 +2 more
Examiner
LE, HOA T
Art Unit
1788
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Sumitomo Metal Mining Co., Ltd.
OA Round
2 (Final)
73%
Grant Probability
Favorable
3-4
OA Rounds
5m
Est. Remaining
85%
With Interview

Examiner Intelligence

Grants 73% — above average
73%
Career Allowance Rate
790 granted / 1087 resolved
+7.7% vs TC avg
Moderate +13% lift
Without
With
+12.6%
Interview Lift
resolved cases with interview
Typical timeline
2y 11m
Avg Prosecution
34 currently pending
Career history
1138
Total Applications
across all art units

Statute-Specific Performance

§103
68.1%
+28.1% vs TC avg
§102
18.6%
-21.4% vs TC avg
§112
10.9%
-29.1% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1087 resolved cases

Office Action

§102
DETAILED ACTION The text of those sections of Title 35, U.S. Code not included in this action can be found in a prior Office action. Claim Rejections - 35 USC § 102 Claims 1-7 stand rejected under 35 U.S.C. 102(a)(1) as being anticipated by TSUNEMATSU (TWI878254 or US-2022/0049105) as set forth in the last office action and reiterated herein below. Note: The citations herein below are taking from the US Publication US-2022/0049105, which is served as the translation for TWI878254. Claim 1: Tsunematsu teaches an organic-inorganic hybrid infrared absorbing particles comprising a resin and an infrared absorbing particle dispersed in the resin (Tsunematsu, para. 0132-0133). The resin is in the form of a capsule (Figures 2-7). Tsunematsu does not report the final content of the absorbing particles in the organic- inorganic hybrid particles; however, the process of making the organic-inorganic hybrid particles of Tsunematsu is identical to the process disclosed in the instant specification with comprises a raw material mixture preparation step by mixing 0.05 g of the infrared absorbing particles and 1.0 g of the coating resin (Tsunematsu, para. 0146) which is the exactly same contents as those disclosed in Example 1 of the instant specification and the final content becomes 20% mass of the infrared absorging particles in the organic- inorganic hybrind particles (See instant specification, pages 62 and 65). Thus, the organic-inorganic hybrid particles of Tsunematsu in Example 1 necessarily comprises 20 mass% of the infrared absorbing particles, which is well within the claimed range of 15 to 55 mass%.. Claim 2: Tsunematsu teaches the hybrid particles to be formed in a mini- emulsion in which the diameter is set to be 50 nm to 500 nm (Tsunematsu, para. 0014) and thus it necessarily results in an organic-inorganic hybrid particle with a median diameter is 1 µm or less and a standard deviation is 500 or less. Claim 3: Tsunematsu reports the resins to include polyester resin, polycarbonate resin, acrylic resin, polystyrene resin, polyamide, resin, vinyl chloride resin, olefin resin, fluororesin, polyvinyl acetate resin, polyurethane resin, acrylonitrile butadiene styrene resin, polyvinyl acetal resin, acrylonitrile styrene copolymer resin, ethylene-vinyl acetate copolymer resin, phenol resin, epoxy resin, melamine resin, urea resin, unsaturated polyester resin, alkyd resin, polyimide resin, and silicone resin (Tsumematsu, para. 0085-0086).. Claim 4. Tsunematsu teaches the resins to include a photocuring resin, and the photocuring resin contains a resin that cures by irradiation with any of ultraviolet, visible, or infrared light (para. 0087). Claim 5: Tsunematsu discloses the infrared absorbing particle to include tungsten oxide represented by a general formula WyOz, where W is tungsten and 0 is oxygen and z/y is 2.2 to 2.999, or a composite tungsten oxide represented by a general formula Mx WyOz where an element M is one or more elements selected from H, He, alkali metal (i.e. Li, Na, K, Rb, Cs, Fr, Be), alkaline earth metal (i.e.Mg, Ca, Sr, Ba), rare earth element (i.e. Ra, Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu) Zr, Hf, V, Nb, Ta, Cr, Mo, Mn, Re, Fe, Ru, Os, Co, Rh, Ir, Ni, Pd, Pt, Cu, Ag, Au, Zn, Cd, B, Al, Ga, In, TI, Si, Ge, Sn, Pb, P, Sb, Bi, S, Se, Te, F, Br, and I; x/y is 0.001 to 1; and z/y is 2.0 to 3.0 (Tsunematsu, para. 0048-0051). Claim 6: Tsunematsu discloses an infrared absorbing particle dispersion comprising a medium and the organic-inorganic hybrid infrared absorbing particles as discussed above (para. 0138-0139). Claim 7: Tsunematsu teaches a method of producing organic-inorganic hybrid infrared absorbing particles comprising forming a dispersion liquid containing infrared absorbing particles, a dispersant, and a dispersion medium; evaporating the dispersion medium from the dispersion liquid; forming a raw material mixture by mixing the infrared absorbing particles collected after the evaporating of the dispersion medium, a coating resin material, an organic solvent, an emulsifier, water, and a polymerization initiator; stirring the raw material mixture while cooling; and performing, after a deoxygenation process to reduce oxygen content in the raw material mixture, polymerization reaction of the coating resin material (Tsunematsu, Example 1, para. 0137-0152) and claim 1. The polymerization initiator is a cationic polymerization initiator, i.e. "electrophiles such as protonic acids, Lewis acids, halogen molecules, carbocations, and the like" (para. 0104). Response to Arguments Applicant argues that the proportion of the infrared absorbing particle as shown in the illustration in paragraph 0146 of Tsunematsu reference fails to satisfy the required 15 to 55 mass% in the hybrid particle as required in the claims. However, this is the exact proportions in forming the raw mixture in the preparation step as exemplified in Applicant’s own specification. Compare the description in the instant specification at page 62, 2nd paragraph to paragraph 0146 of Tsunematsu. Therefore, base on the results shown in Table 1 of the instant speicifcastion (page 64), it is logical to assume that the raw mixture taught by Tsunematsu would have yielded the same results as shown in Table 1 of the instant specification. If not, Applicant is requested to explain the discrepancy between the calculation made in the response and the instant disclosure at pages 63-64 of the instant specification. Applicant's arguments filed March 9, 2026 have been fully considered but they are not persuasive for the reasons discussed above. The amendment to claim 7 has overcome the Double patenting rejection; however, it is inadequate to overcome the art-based rejection for the reasons discussed above. Conclusion THIS ACTION IS MADE FINAL. 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 HOA (Holly) LE whose telephone number is (571)272- 1511. The examiner can normally be reached Monday to Friday, 10:00 am to 7:00 pm. 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, Alicia Chevalier can be reached at 571-272-1490. 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. /HOA (Holly) LE/Primary Examiner, Art Unit 1788
Read full office action

Prosecution Timeline

Feb 08, 2024
Application Filed
Jan 05, 2026
Non-Final Rejection mailed — §102
Mar 09, 2026
Response Filed
Jun 03, 2026
Final Rejection mailed — §102 (current)

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

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Prosecution Projections

3-4
Expected OA Rounds
73%
Grant Probability
85%
With Interview (+12.6%)
2y 11m (~5m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 1087 resolved cases by this examiner. Grant probability derived from career allowance rate.

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