Prosecution Insights
Last updated: April 19, 2026
Application No. 17/595,519

QUINOLINE DERIVATIVE USED FOR COMBINATION TREATMENT OF SMALL CELL LUNG CANCER

Non-Final OA §102§103§DP
Filed
Nov 18, 2021
Examiner
CHEN, PO-CHIH
Art Unit
1621
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Chia Tai Tianqing Pharmaceutical Group Co. Ltd.
OA Round
3 (Non-Final)
75%
Grant Probability
Favorable
3-4
OA Rounds
2y 7m
To Grant
88%
With Interview

Examiner Intelligence

Grants 75% — above average
75%
Career Allow Rate
553 granted / 740 resolved
+14.7% vs TC avg
Moderate +14% lift
Without
With
+13.8%
Interview Lift
resolved cases with interview
Typical timeline
2y 7m
Avg Prosecution
52 currently pending
Career history
792
Total Applications
across all art units

Statute-Specific Performance

§101
0.4%
-39.6% vs TC avg
§103
27.5%
-12.5% vs TC avg
§102
20.0%
-20.0% vs TC avg
§112
31.8%
-8.2% vs TC avg
Black line = Tech Center average estimate • Based on career data from 740 resolved cases

Office Action

§102 §103 §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 . DETAIL ACTION This office action is a response to Applicant’s amendments/remarks after final rejection filed 11/14/2025 and 11/20/2025. As filed, claims 1, 10, and 25-27 are pending; claims 15, 19-24, and 28-31 are withdrawn; and claims 2-9, 11-14, 16-18, and 32-36 are cancelled. After an updated search, the Examiner finds that there are additional 102(a)(2) prior arts and additional ODPs (see rejections below). Since the pending claims were not amended for prior art purpose, and the previous 102(a)(2) rejections were removed under 102(b)(2)(C) exception (see details below), the Examiner, after a discussion with the Applicant’s representative and per guidance under MPEP 706.07(a), has decided to withdraw the finality of the previous office action, which is mailed on 8/12/2025, in order to introduce the abovementioned 102(a)(2) prior arts and ODPs. Accordingly, the prior arts and ODPs are considered as a new ground of rejection and thus, this office action is non-final. Response to Amendments/Remarks Applicant’s amendments/remarks, filed 11/14/2025 and 11/20/2025, with respect to claims 1, 10, and 25-27, have been fully considered and are entered. The status for each rejection in the previous Office Action is set out below. The § 102(a)(2) rejection of claims 1, 10, and 25-27 by Wang1 and its English equivalent (i.e. US Patent Application Publication No. 2022/0211693) is withdrawn per disqualification of Wang1 and its English equivalent as prior arts under 102(b)(2)(C) exception. The Applicants submitted a statement on 11/14/2025, which stated that the instant application and Wang1 or the instant application and the abovementioned English equivalent of Wang1 were, no later than the effective filing date of the claim invention, both subject to an obligation of assignment to Chia Tai Tianqing Pharmaceutical Group Co., Ltd. The § 103(a) rejection of claims 1, 10 and 25-27 by Wang1 and its English equivalent (i.e. US Patent Application Publication No. 2022/0211693) is withdrawn per disqualification of Wang as prior art under 102(b)(2)(C) exception, as stated above in #4. The § 103(a) rejection of claims 1, 10 and 25-27 by Wu and its English equivalent (i.e. US Patent Application Publication No. 2022/0313685) is withdrawn per disqualification of Wu and its English equivalent as prior arts under 102(b)(2)(C) exception. The Applicants submitted a statement on 11/14/2025, which stated that the instant application and Wu or the instant application and the abovementioned English equivalent of Wu were, no later than the effective filing date of the claim invention, both subject to an obligation of assignment to Chia Tai Tianqing Pharmaceutical Group Co., Ltd. The § 103(a) rejection of claims 1, 10 and 25-27 by Zhan and its English equivalent (i.e. US Patent Application Publication No. 2022/01963067) is withdrawn per disqualification of Wu and its English equivalent as prior arts under 102(b)(2)(C) exception. The Applicants submitted a statement on 11/14/2025, which stated that the instant application and Zhan or the instant application and the abovementioned English equivalent of Zhan were, no later than the effective filing date of the claim invention, both subject to an obligation of assignment to Chia Tai Tianqing Pharmaceutical Group Co., Ltd. The claim objection of claim 25 is withdrawn per amendments. 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)(2) the claimed invention was described in a patent issued under section 151, or in an application for patent published or deemed published under section 122(b), in which the patent or application, as the case may be, names another inventor and was effectively filed before the effective filing date of the claimed invention. Claims 1 and 10 are rejected under 35 U.S.C. 102(a)(2) as being anticipated by U.S. Patent No. 11,419,862, hereinafter Wang2. The applied references have a common assignee with the instant application. Based upon the earlier effectively filed date of the reference, it constitutes prior art under 35 U.S.C. 102(a)(2). This rejection under 35 U.S.C. 102(a)(2) might be overcome by: (1) a showing under 37 CFR 1.130(a) that the subject matter disclosed in the reference was obtained directly or indirectly from the inventor or a joint inventor of this application and is thus not prior art in accordance with 35 U.S.C. 102(b)(2)(A); (2) a showing under 37 CFR 1.130(b) of a prior public disclosure under 35 U.S.C. 102(b)(2)(B) if the same invention is not being claimed; or (3) a statement pursuant to 35 U.S.C. 102(b)(2)(C) establishing that, not later than the effective filing date of the claimed invention, the subject matter disclosed in the reference and the claimed invention were either owned by the same person or subject to an obligation of assignment to the same person or subject to a joint research agreement. Regarding claims 1 and 10, Wang2, for instance teaches a combined pharmaceutical composition comprising a compound of formula I and at least one second therapeutic agent, such as etoposide, irinotecan, etc. for treating nasopharyngeal carcinoma. PNG media_image1.png 80 436 media_image1.png Greyscale (abstract) PNG media_image2.png 282 406 media_image2.png Greyscale (column 2, lines 15-30) PNG media_image3.png 136 428 media_image3.png Greyscale (column 5, lines 34-40) PNG media_image4.png 514 422 media_image4.png Greyscale (Eng. Equivalent, ‘862 patent, column 10, lines 8-34) According to the guidance in MPEP 2131.02(III), the Examiner finds that a person of skill in the art would read the abovementioned Wang2 publication and “at once envisage” the claimed arrangement or combination in the abovementioned claims, which led to the abovementioned anticipation. Claims 1, 10, and 25-27 are rejected under 35 U.S.C. 102(a)(2) as being anticipated by Foreign Patent Application Publication No. WO2020/015703, as well as its English equivalent, which are U.S. Patent No. 12,390,458, hereinafter Tian. The applied references have a common assignee with the instant application. Based upon the earlier effectively filed date of the reference, it constitutes prior art under 35 U.S.C. 102(a)(2). This rejection under 35 U.S.C. 102(a)(2) might be overcome by: (1) a showing under 37 CFR 1.130(a) that the subject matter disclosed in the reference was obtained directly or indirectly from the inventor or a joint inventor of this application and is thus not prior art in accordance with 35 U.S.C. 102(b)(2)(A); (2) a showing under 37 CFR 1.130(b) of a prior public disclosure under 35 U.S.C. 102(b)(2)(B) if the same invention is not being claimed; or (3) a statement pursuant to 35 U.S.C. 102(b)(2)(C) establishing that, not later than the effective filing date of the claimed invention, the subject matter disclosed in the reference and the claimed invention were either owned by the same person or subject to an obligation of assignment to the same person or subject to a joint research agreement. Regarding claims 1, 10, and 25-27, Tian, for instance teaches a combined pharmaceutical composition comprising a compound of formula I and at least one second therapeutic agent, such as sintilimab, etc. for treating lung and liver tumors. In addition, Tian teaches the components of the abovementioned composition can be formulated separately into a suitable pharmaceutical composition, or be in a non-fixed combination wherein each components can be packaged, sold or administered as a fully independent pharmaceutical composition. PNG media_image5.png 138 434 media_image5.png Greyscale (Eng. Equivalent, ‘458 patent, abstract) PNG media_image2.png 282 406 media_image2.png Greyscale (Eng. Equivalent, ‘458 patent, column 2, lines 1-15) PNG media_image6.png 114 426 media_image6.png Greyscale (Eng. Equivalent, ‘458 patent, column 5, lines 60-65) PNG media_image7.png 198 428 media_image7.png Greyscale (Eng. Equivalent, ‘458 patent, column 8, lines 32-41) PNG media_image8.png 244 426 media_image8.png Greyscale (Eng. Equivalent, ‘458 patent, column 8, lines 49-61) PNG media_image9.png 154 420 media_image9.png Greyscale (Eng. Equivalent, ‘458 patent, column 9, lines 32-39) According to the guidance in MPEP 2131.02(III), the Examiner finds that a person of skill in the art would read the abovementioned Tian publication and “at once envisage” the claimed arrangement or combination in the abovementioned claims, which led to the abovementioned anticipation. 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. The instant claims are drawn to a combined pharmaceutical composition comprising instant compound I and a second therapeutic agent depicted in claim 1. Claims 1 and 10 are rejected on the ground of nonstatutory obviousness-type double patenting (ODP) as being unpatentable over the conflicting claims of the following U.S. patents or co-pending applications. See Table below. If the conflicting claims are in a co-pending application, then the rejection is a provisional ODP rejection because the conflicting claims have not in fact been patented. Co-pending Application No./ U.S. Patent No. Conflicting Claims Provisional ODP (Yes or No) 12,390,458 1-3 No In this instance, the analysis employed for the abovementioned nonstatutory obviousness-type double patenting rejection parallels the analysis for anticipation, wherein the instant combination is anticipated by the combination encompassed by the abovementioned conflicting claims of the abovementioned U.S. patent. PNG media_image10.png 468 414 media_image10.png Greyscale (claim 1 of the ‘458 patent) Claims 1 and 10 are rejected on the ground of nonstatutory obviousness-type double patenting (ODP) as being unpatentable over the conflicting claims of the following U.S. patents or co-pending applications. See Table below. If the conflicting claims are in a co-pending application, then the rejection is a provisional ODP rejection because the conflicting claims have not in fact been patented. Co-pending Application No./ U.S. Patent No. Conflicting Claims Provisional ODP (Yes or No) 11,419,862 15-22 No 12,390,458 4-14 No The analysis employed for an obviousness-type double patenting rejection parallels the analysis for a determination of obviousness under 35 U.S.C. § 103. See MPEP 804; In re Braat, 937 F.2d 589, 19 USPQ 2d 1290 (Fed. Cir. 1991); In re Longi, 759 F.2d 887, 225 USPQ 645 (Fed. Cir. 1985). For this reason, the factual inquires set forth in Graham v. John Deere Co., 383 U.S. 1, USPQ 459 (1966) are employed herein. The Graham v. Deere inquires are summarized as follows: (A) Determining the scope and contents of the patent claim relative to a claim in the application at issue; (B) Ascertaining the differences between the scope and content of the patent claim as determined in (A) and the claim in the application at issue; (C) Determine the level of ordinary skill in the pertinent art; and, (D) Evaluate any objective indicia of nonobviousness. (A) Determining the scope and contents of the patent claim relative to a claim in the application at issue – The conflicting claims of the abovementioned U.S. patents are drawn to a method of treatment using the instant pharmaceutical composition. (B) Ascertaining the differences between the scope and content of the patent claim as determined in (A) and the claim in the application at issue - The conflicting claims of the abovementioned U.S. patents described the instant pharmaceutical composition in a method of treatment-type claim. (C) Determine the level of ordinary skill in the pertinent art - the level of ordinary skill in the art may be found by inquiring into: (1) the type of problems encountered in the art; (2) prior art solutions to those problems; (3) the rapidity with which innovations are made; (4) the sophistication of the technology; and (5) the education level of active workers in the field. Custom Accessories, Inc. v. Jeffrey-Allan Industries, Inc., 807 F.2d 855, 962 (Fed. Cir. 1986). All of those factors may not be present in every case, and one or more of them may predominate. Envtl. Designs, Ltd. v. Union Oil Co., 713 F.2d 693, 696 (Fed. Cir. 1983). Based on the typical education level of active workers in the field of organic chemistry, as well as the high degree of sophistication required to solve problems encountered in the art, the Examiner finds that a person of ordinary skill in the art would have at least a college degree in the field related to medicine, chemistry, and/or the pharmaceutical art and at least four years of work experience, i.e. a masters or doctorate level scientist/clinician. (D) Evaluate any objective indicia of nonobviousness – none. Conclusion - Although the conflicting claims are not identical, one of ordinary skill in the art would recognize that they are not patentably distinct from each other. As recited above, the pharmaceutical composition in the conflicting claims of abovementioned U.S. patents is the instant pharmaceutical composition. The unpredictable nature of the chemical arts generally allows an assertion of similarity to be rebutted by a sufficient demonstration of nonobviousness that employs secondary considerations of objective indicia. In this case, there are no indicia of nonobviousness shown to provide evidence that pharmaceutical composition of the abovementioned U.S. patents is excluded as the instant pharmaceutical composition of the instant application. Absent indicia of nonobviousness, the Examiner finds that one of ordinary skill in the art would consider the instant pharmaceutical composition and that of the conflicting claims of the abovementioned U.S. patents to be equally effective in their objective. This rejection is in agreement with the judicially created doctrine grounded in public policy 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. Conclusion Claims 1, 10, and 25-27 are rejected. Claims 15, 19-24, and 28-31 are withdrawn Claims 2-9, 11-14, 16-18, and 32-36 are cancelled. Telephone Inquiry Any inquiry concerning this communication or earlier communications from the examiner should be directed to PO-CHIH CHEN whose telephone number is (571)270-7243. The examiner can normally be reached Monday - Friday 10:00 am to 6:00 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, Clinton Brooks can be reached at (571)270-7682. 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. /PO-CHIH CHEN/Primary Examiner, Art Unit 1621
Read full office action

Prosecution Timeline

Nov 18, 2021
Application Filed
Feb 07, 2025
Non-Final Rejection — §102, §103, §DP
Apr 30, 2025
Response Filed
Aug 09, 2025
Final Rejection — §102, §103, §DP
Sep 29, 2025
Response after Non-Final Action
Nov 18, 2025
Applicant Interview (Telephonic)
Nov 19, 2025
Examiner Interview Summary
Nov 20, 2025
Response after Non-Final Action
Feb 10, 2026
Non-Final Rejection — §102, §103, §DP
Feb 12, 2026
Request for Continued Examination
Feb 18, 2026
Response after Non-Final Action

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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
75%
Grant Probability
88%
With Interview (+13.8%)
2y 7m
Median Time to Grant
High
PTA Risk
Based on 740 resolved cases by this examiner. Grant probability derived from career allow rate.

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