Prosecution Insights
Last updated: October 04, 2026
Application No. 18/512,180

HETEROCYCLIC COMPOUND AND ORGANIC LIGHT EMITTING DEVICE COMPRISING THE SAME

Non-Final OA §102§103§112§DP
Filed
Nov 17, 2023
Priority
Dec 12, 2022 — RE 10-2022-0172858
Examiner
WATSON, BRAELYN
Art Unit
Tech Center
Assignee
LT Materials Co., Ltd.
OA Round
1 (Non-Final)
44%
Grant Probability
Moderate
1-2
OA Rounds
1y 7m
Est. Remaining
82%
With Interview

Examiner Intelligence

Grants 44% of resolved cases
44%
Career Allowance Rate
61 granted / 138 resolved
-15.8% vs TC avg
Strong +38% interview lift
Without
With
+38.3%
Interview Lift
resolved cases with interview
Typical timeline
4y 6m
Avg Prosecution
34 currently pending
Career history
186
Total Applications
across all art units

Statute-Specific Performance

§101
0.2%
-39.8% vs TC avg
§103
56.8%
+16.8% vs TC avg
§102
10.1%
-29.9% vs TC avg
§112
29.0%
-11.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 138 resolved cases

Office Action

§102 §103 §112 §DP
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 . Specification The disclosure is objected to because of the following informalities: various structures throughout the specification are blurry. Appropriate correction is required. Claim Objections Claim 9 is objected to because of the following informalities: claim 9 contains blurry compounds. 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 11-12 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. Claims 11-12 recite the limitation "the organic material layer" in line 2 rather than “the one or more organic material layers”. There is insufficient antecedent basis for the limitation of “the organic material layer” in the claims. Claim Rejections - 35 USC § 102 In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis (i.e., changing from AIA to pre-AIA ) for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status. 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. Claims 1-4, 6-8, and 10-13 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Choi (English translation of KR 20150021861 A obtained from Espacenet), supporting evidence provided by Ossila (“Electron / Hole Transport Layer Materials | ETL Layer.” Ossila, 2025. Accessed 18 Aug. 2026.) Regarding claims 1-4, 6-8, and 10-13, Choi teaches an organic light emitting device having improved luminous efficiency and lifespan by including an aromatic derivative represented by chemical formula 1 having excellent luminous efficiency and thermal stability (¶ [0001], [0012]-[0014], and [0272]). Choi teaches examples of such devices including that of HTL Experiment which includes an anode, a hole transport layer including compound G-12, a light emitting layer, a hole blocking layer, and a cathode (¶ [0269]; Table 20 on pg. 137). Compound G-12 is reproduced below in comparison to the claimed Chemical Formula 1. G-12: PNG media_image1.png 119 26 media_image1.png Greyscale Chemical Formula 1: PNG media_image2.png 193 318 media_image2.png Greyscale Compound G-12 reads on the claimed Chemical Formula 1 wherein: R1 is a group represented by Chemical Formula 2, R2 is a substituted C6 aryl group, and R3 is hydrogen; a is 0 and b is 1; m is 1, n1 is 1, and n2 is 6; L1 is an unsubstituted C6 arylene group and L2 and L3 are each a single bond; Ar1 and Ar2 are each an unsubstituted C6 aryl group (phenyl) (claim 6); and p, q, and r are each 1. Additionally, compound G-12 reads on the claimed Chemical Formula 1-c (claim 2), Chemical Formula 1-c-1 (claim 3) wherein R3 is hydrogen (claim 4), the structural formula PNG media_image3.png 60 135 media_image3.png Greyscale (claim 7). Compound G-12 does not include deuterium and thus meets the limitations of claim 8. Per claim 12, a hole transport layer blocks electrons from reaching the anode (see Ossila, middle of pg. 1). Accordingly, a hole transport layer is considered an electron blocking layer. 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 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. This application currently names joint inventors. In considering patentability of the claims the examiner presumes that the subject matter of the various claims was commonly owned as of the effective filing date of the claimed invention(s) absent any evidence to the contrary. Applicant is advised of the obligation under 37 CFR 1.56 to point out the inventor and effective filing dates of each claim that was not commonly owned as of the effective filing date of the later invention in order for the examiner to consider the applicability of 35 U.S.C. 102(b)(2)(C) for any potential 35 U.S.C. 102(a)(2) prior art against the later invention. Claim 5 is rejected under 35 U.S.C. 103 as being unpatentable over Choi (English translation of KR 20150021861 A obtained from Espacenet). Regarding claim 5, Choi teaches compound G-12, as described above with respect to claim 3. Compound G-12 fails to read on the limitations of claim 5 as the aryl group is substituted with an amine group. However, Choi teaches in chemical formula 1, X2 may be represented by a hydrogen atom or a substituted aryl group (as shown in compound G-12), among others. chemical formula 1: PNG media_image4.png 180 234 media_image4.png Greyscale Therefore, given the general formula and teachings of Choi, it would have been obvious to one of ordinary skill in the pertinent art before the effective filing date of the claimed invention to substitute the group PNG media_image1.png 119 26 media_image1.png Greyscale in the location of X2 with hydrogen, because Choi teaches X2 may suitably be selected as hydrogen. The substitution would have been one known element for another and one of ordinary skill in the pertinent art would reasonably expect the predictable result that the modified compound would be useful in the hole transport layer of the device of Choi and possess the benefits taught by Choi above. See MPEP 2143.I.(B). In particular, it would have been obvious to one of ordinary skill in the pertinent art before the effective filing date of the claimed invention to select hydrogen, because it would have been choosing from a list of groups taught by Choi as suitable for X2, which would have been a choice from a finite number of identified, predictable solutions of a compound useful in the hole transport layer of the device of Choi and possessing the benefits taught by Choi above. One of ordinary skill in the art would have been motivated to produce additional compounds represented by Choi’s chemical formula 1 having the benefits taught by Choi in order to pursue the known options within his or her technical grasp with a reasonable expectation of success. See MPEP 2143.I.(E). The modified compound G-12 reads on the claimed Chemical Formula 1 wherein R1 is hydrogen. As one of R1 to R3 is not required to be a C6 to C60 aryl group, the limitations of claim 5 are met. Claim 9 is rejected under 35 U.S.C. 103 as being unpatentable over Choi (English translation of KR 20150021861 A obtained from Espacenet) as applied to claim 3 above, and further in view of Parham (US 2016/0308146 A1). Regarding claim 9, Choi teaches compound G-12, as described above with respect to claim 3. Compound G-12 fails to read on a claimed compound as it contains two amine groups. However, Choi teaches in chemical formula 1, X2 may be represented by a hydrogen atom or a substituted aryl group (as shown in compound G-12), among others. chemical formula 1: PNG media_image4.png 180 234 media_image4.png Greyscale Therefore, given the general formula and teachings of Choi, it would have been obvious to one of ordinary skill in the pertinent art before the effective filing date of the claimed invention to substitute the group PNG media_image1.png 119 26 media_image1.png Greyscale in the location of X2 with hydrogen, because Choi teaches X2 may suitably be selected as hydrogen. The substitution would have been one known element for another and one of ordinary skill in the pertinent art would reasonably expect the predictable result that the modified compound would be useful in the hole transport layer of the device of Choi and possess the benefits taught by Choi above. See MPEP 2143.I.(B). In particular, it would have been obvious to one of ordinary skill in the pertinent art before the effective filing date of the claimed invention to select hydrogen, because it would have been choosing from a list of groups taught by Choi as suitable for X2, which would have been a choice from a finite number of identified, predictable solutions of a compound useful as in the hole transport layer of the device of Choi and possessing the benefits taught by Choi above. One of ordinary skill in the art would have been motivated to produce additional compounds represented by Choi’s chemical formula 1 having the benefits taught by Choi in order to pursue the known options within his or her technical grasp with a reasonable expectation of success. See MPEP 2143.I.(E). modified G-12: PNG media_image1.png 119 26 media_image1.png Greyscale The modified compound G-12 fails to read on a claimed compound as it includes phenyl substituents on the nitrogen atom. However, Choi teaches X3 in chemical formula 1 may be represented by a substituted aryl group having 6 to 50 carbon atoms (¶ [0030]). Parham teaches a compound represented by general formula (1) for use in a hole transporting layer of an organic electronic device (¶ [0009]-[0010] and [0083]). The compound comprises a hole-transporting group HTG, wherein the HTG may be a triaylamine (¶ [0083]-[0084]). Examples of general formula (1) include Formula (A-149) and Formula (A-150) (pg. 56). A-149: PNG media_image5.png 104 43 media_image5.png Greyscale A-150: PNG media_image6.png 261 68 media_image6.png Greyscale Accordingly, Parham teaches the hole-transporting group PNG media_image6.png 261 68 media_image6.png Greyscale is a suitable substitute for the hole-transporting group PNG media_image5.png 104 43 media_image5.png Greyscale in a hole transporting compound of an organic electronic device. Therefore, given the general formula and teachings of Choi and the teachings of Parham, it would have been obvious to one of ordinary skill in the pertinent art before the effective filing date of the claimed invention to substitute PNG media_image5.png 104 43 media_image5.png Greyscale with PNG media_image6.png 261 68 media_image6.png Greyscale in the modified compound G-12, because Choi teaches X3 in chemical formula 1 may be represented by a substituted aryl group having 6 to 50 carbon atoms and because Parham teaches the hole-transporting group PNG media_image6.png 261 68 media_image6.png Greyscale is a suitable substitute for the hole-transporting group PNG media_image5.png 104 43 media_image5.png Greyscale in a hole transporting compound of an organic electronic device. The substitution would have been one known element for another and one of ordinary skill in the pertinent art would reasonably expect the predictable result that the modified compound would be useful in the hole transport layer of the device of Choi and possess the benefits taught by Choi and Parham. See MPEP 2143.I.(B). The modified compound G-12 reads on the claimed compound 191 (claim 9). 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 conflicting claims 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); 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 nonstatutory double patenting provided the reference application or patent either is shown to be commonly owned with the examined application, or claims an invention made as a result of activities undertaken within the scope of a joint research agreement. See MPEP § 717.02 for applications subject to examination under the first inventor to file provisions of the AIA as explained in MPEP § 2159. See MPEP § 2146 et seq. for applications not subject to examination under the first inventor to file provisions of the AIA . A terminal disclaimer must be signed in compliance with 37 CFR 1.321(b). The filing of a terminal disclaimer by itself is not a complete reply to a nonstatutory double patenting (NSDP) rejection. A complete reply requires that the terminal disclaimer be accompanied by a reply requesting reconsideration of the prior Office action. Even where the NSDP rejection is provisional the reply must be complete. See MPEP § 804, subsection I.B.1. For a reply to a non-final Office action, see 37 CFR 1.111(a). For a reply to final Office action, see 37 CFR 1.113(c). A request for reconsideration while not provided for in 37 CFR 1.113(c) may be filed after final for consideration. See MPEP §§ 706.07(e) and 714.13. The USPTO Internet website contains terminal disclaimer forms which may be used. Please visit www.uspto.gov/patent/patents-forms. The actual filing date of the application in which the form is filed determines what form (e.g., PTO/SB/25, PTO/SB/26, PTO/AIA /25, or PTO/AIA /26) 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 www.uspto.gov/patents/apply/applying-online/eterminal-disclaimer. Claims 1-13 are provisionally rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1-14 of copending Application No. 18/290,481 (reference application). Although the claims at issue are not identical, they are not patentably distinct from each other because claim 9 of ‘491 recites compounds and a device that meets the limitations of claims 1 ,6-8, and 10-13 of ‘180. For example claim 9 of ‘481 recites compound 474 which reads on the limitations of claims 1 and 6-8 of ‘180. 474 of ‘481: PNG media_image7.png 156 147 media_image7.png Greyscale Chemical Formula 1 of ‘180 PNG media_image2.png 193 318 media_image2.png Greyscale Compound 474 of ‘481 reads on the Chemical Formula 1 of ‘180 wherein: R1 is an unsubstituted C6 aryl group, R2 is a group represented by Chemical Formula 2, and R3 is hydrogen; a is 0 and b is 1; m is 1, n1 is 1, and n2 is 6; L1 to L3 are each a single bond; Ar1 and Ar2 are each an unsubstituted C12 aryl group (biphenyl) (claim 6); and p, q, and r are each 1. Additionally, compound 474 reads on the structural formula PNG media_image8.png 102 207 media_image8.png Greyscale (claim 7), and does not include deuterium (claim 8). Claim 8 of ‘481 corresponds to claim 8 of ‘180. Additionally, ‘481 recites Chemical Formula 1 in claims 1-4 and Chemical Formulas 1-1 to 1-3 in claims 5-7. As evidenced by the compounds in claim 9 of ‘481, it would have been obvious to one of ordinary skill in the pertinent art before the effective filing date of the claimed invention to select variables of Chemical Formula 1 and Chemical Formulas 1-1 to 1-3 to arrive at the instant claimed Chemical Formula 1, because it would have been choosing from a list of variables specifically taught, which would have been a choice from a finite number of identified, predictable solutions of a compound possessing the benefits taught by ‘481. One of ordinary skill in the art would have been motivated to produce additional compounds represented by Chemical Formula 1 and Chemical Formulas 1-1 to 1-3 of ‘481 having the benefits taught by ‘481 in order to pursue the known options within his or her technical grasp with a reasonable expectation of success. See MPEP 2143.I.(E). Additionally, the device of claims 10-14 of ‘481 correspond to the device of claims 10-13 of ‘180, respectively. It would have been obvious to one of ordinary skill in the pertinent art before the effective filing date of the claimed invention to use a compound of ‘481 (for example, compound 474) as described in claims 10-14 of ‘481 and thus comprising the limitations of 10-13 of ‘180, because one of ordinary skill in the art would reasonably have expected the elements of the compound represented by Chemical Formula 1 and the device to predictably maintain their respective properties or functions after they have been combined, and this would have been combining prior art elements according to known methods to yield predictable results. See MPEP 2143.I.(A). With respect to claims 2-5 and 9 of ‘180, while compound 474 of ‘481 fails to read on one of the claimed Chemical Formulas 1-a, 1-b, or 1-c, ‘481 does recite in claim 1 that any two or more groups adjacent to each other in Chemical Formula 1 may bond to each other to form a substituted or unsubstituted C6 to C60 aromatic hydrocarbon ring or a substituted or unsubstituted C2 to C60 heterocycle. Chemical Formula 1 of ‘481: PNG media_image9.png 247 312 media_image9.png Greyscale Therefore, given the general formula and teachings of ‘481, it would have been obvious to one of ordinary skill in the pertinent art before the effective filing date of the claimed invention to make the positional isomer of compound 474 wherein R9 and R10 form a ring rather than R10 and R11. One of ordinary skill in the pertinent art would have been motivated to produce additional compounds represented Chemical Formula 1 of ‘471 in order to pursue the known options within his or her technical grasp and would expect the isomeric compounds to possess the properties taught by ‘471. A prima facie case of obviousness exists when chemical compounds have very close structural similarity and similar utilities. See MPEP 2144.09 I. Compounds which are positional isomers or homologs are of sufficiently close structural similarity that there is an expectation that such compounds possess similar properties. See MPEP 2144.09 II. The resulting modified compound reads on the limitations of claims 2-5 of ‘180 and reads on compound 331 (claim 9) of ‘180. This is a provisional nonstatutory double patenting rejection because the patentably indistinct claims have not in fact been patented. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Compound 126 of US 2018/0366647 A1 anticipates the claimed Chemical Formula 1 (see pg. 150). Contact Information Any inquiry concerning this communication or earlier communications from the examiner should be directed to BRAELYN R WATSON whose telephone number is (571)272-1822. The examiner can normally be reached M-F 7:30am-5pm. 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, Jennifer Boyd can be reached at 571-272-7783. 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. /BRAELYN R WATSON/Primary Examiner, Art Unit 1786
Read full office action

Prosecution Timeline

Nov 17, 2023
Application Filed
Aug 24, 2026
Non-Final Rejection mailed — §102, §103, §112 (current)

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Prosecution Projections

1-2
Expected OA Rounds
44%
Grant Probability
82%
With Interview (+38.3%)
4y 6m (~1y 7m remaining)
Median Time to Grant
Low
PTA Risk
Based on 138 resolved cases by this examiner. Grant probability derived from career allowance rate.

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