Prosecution Insights
Last updated: April 19, 2026
Application No. 18/262,528

CURABLE COMPOSITION AND OPTICAL MATERIAL COMPRISING SAME

Non-Final OA §102§103§112§DP
Filed
Jul 21, 2023
Examiner
CAI, WENWEN
Art Unit
1763
Tech Center
1700 — Chemical & Materials Engineering
Assignee
LG Chem, Ltd.
OA Round
1 (Non-Final)
60%
Grant Probability
Moderate
1-2
OA Rounds
3y 2m
To Grant
80%
With Interview

Examiner Intelligence

Grants 60% of resolved cases
60%
Career Allow Rate
509 granted / 850 resolved
-5.1% vs TC avg
Strong +20% interview lift
Without
With
+19.8%
Interview Lift
resolved cases with interview
Typical timeline
3y 2m
Avg Prosecution
74 currently pending
Career history
924
Total Applications
across all art units

Statute-Specific Performance

§101
0.8%
-39.2% vs TC avg
§103
43.6%
+3.6% vs TC avg
§102
17.4%
-22.6% vs TC avg
§112
27.9%
-12.1% vs TC avg
Black line = Tech Center average estimate • Based on career data from 850 resolved cases

Office Action

§102 §103 §112 §DP
DETAILED ACTION The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA . Claim Objections Claims 1, 10 objected to because of the following informalities: the parentheses should be removed. Appropriate correction is required. Claim Rejections - 35 USC § 112 The following is a quotation of 35 U.S.C. 112(b): (B) CONCLUSION.—The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the inventor or a joint inventor regards as the invention. The following is a quotation of 35 U.S.C. 112 (pre-AIA ), second paragraph: The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the applicant regards as his invention. Claims 10-13 are rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor (or for applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention. Claim 10 recites an optical material comprising an episulfide compound and the sulfur-containing polymer compound. However, the optical material is formed by curing the curable composition of claim 1. In a cured product, the ingredients lose their original characteristic present in curable condition. In other words, the optical material does not comprise the episulfide compound and the sulfur-containing polymer compound. For purposes of expediting prosecution, the claim is interpreted as an optical material comprises a cured product of formed by curing the curable composition of claim 1. 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. Claim(s) 1-2, 5, 8-13 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Kim et al (US 2021/0163684, equivalent with WO2020235913). Claim(s) 1-2, 5, 8-10: Kim teaches a curable composition comprising an episulfide PNG media_image1.png 83 222 media_image1.png Greyscale and a cyclic compound PNG media_image2.png 227 239 media_image2.png Greyscale (table 1, example 1), the weight ratio of the cyclic compound and the episulfide is 1:6.7. Kim further teaches an optical material comprising a cured product of the curable composition (abstract). Claims 11-13: Because Kim teaches the claimed composition, it is therefore inherent that the composition exhibit claimed property since such a property is evidently dependent upon the nature of the composition used, see MPEP 2112.01. Absent an objective showing to the contrary, the addition of the claimed physical properties to the claim language fails to provide patentable distinction over the prior art. Claim(s) 1-5, 8-13 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Choi et al (US 2022/0204702, equivalent with WO2021085956). Choi teaches a curable composition comprising an episulfide and a compound PNG media_image3.png 72 193 media_image3.png Greyscale (claims, example 4), the weight ratio of the compound and the episulfide is 1:10. Choi further teaches an optical material comprising a cured product of the curable composition. Because Choi teaches the claimed composition, it is therefore inherent that the composition exhibit claimed property since such a property is evidently dependent upon the nature of the composition used, see MPEP 2112.01. Absent an objective showing to the contrary, the addition of the claimed physical properties to the claim language fails to provide patentable distinction over the prior art. Claim Rejections - 35 USC § 103 The following is a quotation of 35 U.S.C. 103 which forms the basis for all obviousness rejections set forth in this Office action: A patent for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102, if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains. Patentability shall not be negated by the manner in which the invention was made. The factual inquiries set forth in Graham v. John Deere Co., 383 U.S. 1, 148 USPQ 459 (1966), that are applied for establishing a background for determining obviousness under 35 U.S.C. 103 are summarized as follows: 1. Determining the scope and contents of the prior art. 2. Ascertaining the differences between the prior art and the claims at issue. 3. Resolving the level of ordinary skill in the pertinent art. 4. Considering objective evidence present in the application indicating obviousness or nonobviousness. Claims 6-7 is/are rejected under 35 U.S.C. 103 as being unpatentable over Kim et al (US 2021/0163684) in view of Kamura et al (US 2014/0357835) and Kariyazono et al (US 2017/0334876). Kim teaches the limitation of claim 1, as discussed above. Kim does not teach a sulfur particle. However, Kamura teaches including sulfur can improve the refractive index of an optical material [0026]. Kariyazono teaches the sulfur particle size should be small than mesh size of 60 (250um), so that it can be dissolved completely [0049]. Therefore, it would have been obvious to one of ordinary skill in the art at the time the invention was made to include sulfur in the curable composition to adjust refractive index when a higher refractive index optical material is desired. Claims 1-5, 8-13 is/are rejected under 35 U.S.C. 103 as being unpatentable over Oki et al (JP2006265408). In setting forth this rejection a machine translation of JP2006265408 has been relied upon and all citations to paragraph numbers in the discussion below are with respect to the machine translation. Claims 1-3, 8-10: Oki teaches a curable composition comprising A, B1, C and D [0012]. B1 is an aliphatic liner oligomer such as polyethylene sulfide thiol, polyethylene disulfide thiol and polyethylene polysulfide thiol, polyethylene sulfide diol polyethylene disulfide diol and polyethylene polysulfide diol [0022-0023]. D is bis(β-epithiopropyl) sulfide [0058]. Oki further teaches an optical material comprising a cured product of the curable composition Oki does not expressly name a single embodiment having the claimed composition. However, each of the components of the composition is described in the reference. Therefore, it would have been obvious to a person of ordinary skill in the art at the time of the present invention to have made any of the compositions suggested by the reference, including the claimed composition, thereby arriving at the presently claimed invention. Claim 4: Oki does not explicitly disclose how many sulfide in the polysulfide section. However, Oki discloses sulfide and disulfide and then followed with polysulfide, it is reasonably believed the polysulfide includes trisulfide and tetrasulfide, the latter results in a repeating unit of PNG media_image4.png 74 278 media_image4.png Greyscale . Claim 5: the composition comprises 10-50 wt% of B1 and 20-50 wt% of D. Therefore, the weight ratio would overlap the claimed range. Claims 11-13: Oki is silent with respect to the properties of the cured article. However, the teachings from Oki have rendered obvious the instantly claimed ingredients and amounts thereof. Therefore, it is reasonable that one of ordinary skill in the art would expect the claimed physical properties to naturally arise. Claims 6-7 is/are rejected under 35 U.S.C. 103 as being unpatentable over Oki et al (JP2006265408) in view of Kamura et al (US 2014/0357835) and Kariyazono et al (US 2017/0334876). Oki teaches the limitation of claim 1, as discussed above. Oki further teaches a refractive index improving component can be included [0043]. Oki does not teach a sulfur particle. However, Kamura teaches sulfur particle can improve refractive index [0026]. Kariyazono teaches the sulfur particle size should be small than mesh size of 60 (250um), so that it can be dissolved completely [0049]. Therefore, it would have been obvious to one of ordinary skill in the art at the time the invention was made to include sulfur in the curable composition to improve refractive index. Double Patenting The nonstatutory double patenting rejection is based on a judicially created doctrine grounded in public policy (a policy reflected in the statute) so as to prevent the unjustified or improper timewise extension of the “right to exclude” granted by a patent and to prevent possible harassment by multiple assignees. A nonstatutory double patenting rejection is appropriate where the claims at issue are not identical, but at least one examined application claim is not patentably distinct from the reference claim(s) because the examined application claim is either anticipated by, or would have been obvious over, the reference claim(s). See, e.g., In re Berg, 140 F.3d 1428, 46 USPQ2d 1226 (Fed. Cir. 1998); In re Goodman, 11 F.3d 1046, 29 USPQ2d 2010 (Fed. Cir. 1993); In re Longi, 759 F.2d 887, 225 USPQ 645 (Fed. Cir. 1985); In re Van Ornum, 686 F.2d 937, 214 USPQ 761 (CCPA 1982); In re Vogel, 422 F.2d 438, 164 USPQ 619 (CCPA 1970); and In re Thorington, 418 F.2d 528, 163 USPQ 644 (CCPA 1969). A timely filed terminal disclaimer in compliance with 37 CFR 1.321(c) or 1.321(d) may be used to overcome an actual or provisional rejection based on a nonstatutory double patenting ground provided the reference application or patent either is shown to be commonly owned with this application, or claims an invention made as a result of activities undertaken within the scope of a joint research agreement. A terminal disclaimer must be signed in compliance with 37 CFR 1.321(b). The USPTO internet Web site contains terminal disclaimer forms which may be used. Please visit http://www.uspto.gov/forms/. The filing date of the application will determine what form should be used. A web-based eTerminal Disclaimer may be filled out completely online using web-screens. An eTerminal Disclaimer that meets all requirements is auto-processed and approved immediately upon submission. For more information about eTerminal Disclaimers, refer to http://www.uspto.gov/patents/process/file/efs/guidance/eTD-info-I.jsp. Claims 1-5, 8-9 rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1-2, 4-5 of U.S. Patent No.12/371,533. Although the claims at issue are not identical, they are not patentably distinct from each other because ‘533 claims a curable composition comprising an episulfide compound and a sulfur containing polymer. Claims 1-2, 5, 8-13 rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1-5, 9, 12, 14 of U.S. Patent No.11/945,914. Although the claims at issue are not identical, they are not patentably distinct from each other because ‘914 claims a curable composition comprising an episulfide compound and a sulfur containing polymer. Any inquiry concerning this communication or earlier communications from the examiner should be directed to WENWEN CAI whose telephone number is (571)270-3590. The examiner can normally be reached on M-F 9am-6pm. 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 on (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 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. /WENWEN CAI/ Primary Examiner, Art Unit 1763
Read full office action

Prosecution Timeline

Jul 21, 2023
Application Filed
Feb 12, 2026
Non-Final Rejection — §102, §103, §112 (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

1-2
Expected OA Rounds
60%
Grant Probability
80%
With Interview (+19.8%)
3y 2m
Median Time to Grant
Low
PTA Risk
Based on 850 resolved cases by this examiner. Grant probability derived from career allow rate.

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