Prosecution Insights
Last updated: April 19, 2026
Application No. 18/279,219

BIPHENYL COMPOUND AS IMMUNOMODULATOR, PREPARATION METHOD THEREFOR AND USE THEREOF

Non-Final OA §102§112§DP
Filed
Aug 29, 2023
Examiner
MOORE, SUSANNA
Art Unit
1624
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Shenzhen Chipscreen Biosciences Co. Ltd.
OA Round
1 (Non-Final)
68%
Grant Probability
Favorable
1-2
OA Rounds
3y 0m
To Grant
99%
With Interview

Examiner Intelligence

Grants 68% — above average
68%
Career Allow Rate
842 granted / 1237 resolved
+8.1% vs TC avg
Strong +32% interview lift
Without
With
+32.2%
Interview Lift
resolved cases with interview
Typical timeline
3y 0m
Avg Prosecution
68 currently pending
Career history
1305
Total Applications
across all art units

Statute-Specific Performance

§101
1.4%
-38.6% vs TC avg
§103
18.6%
-21.4% vs TC avg
§102
17.3%
-22.7% vs TC avg
§112
36.6%
-3.4% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1237 resolved cases

Office Action

§102 §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 . This is the first action on the merits. Election/Restrictions Applicant’s election of Group (I) in the reply filed on January 14, 2026 is acknowledged. Because applicant did not distinctly and specifically point out the supposed errors in the restriction requirement, the election has been treated as an election without traverse (MPEP § 818.01(a)). Group (I), drawn to compounds of formula (I) and compositions thereof, embraced by claims 1-11, 13 and 20 was elected by Applicant. Applicant has not pointed to any errors in the Examiner’s analysis of the different inventions. The requirement is still deemed proper and is therefore made FINAL. Applicant elected the following species: PNG media_image1.png 117 621 media_image1.png Greyscale PNG media_image2.png 249 374 media_image2.png Greyscale , and indicated claims 1-9, 11, 13-17 and 19-22 read on said species. However, claims 14-17, 19, 21 and 22 are not within Group (I). Based on the elected species and those species in claim 13, the phrase, “wherein, at least one hydrogen atom in each group of the R1-R30 defined above is replaced by deuterium,” at the end of claim 1, is being interpreted as “wherein, at least one hydrogen atom of the R1-R30 defined above is replaced by deuterium.” Currently as written, the elected species is not embraced by claim 1 and there are no species disclosed that fall within claim 1. Applicant was informed of the interpretation in an interview on February 18, 2026. Claims 1-9, 11 and 13-22 are pending and claims 1-9, 11, 13 and 20 are under examination. Claims 14-19, 21 and 22 are withdrawn due to the restriction requirement. Specification The substitute specification filed April 3, 2025 has been entered because it does conform to 37 CFR 1.125(b) and (c). 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 1-9, 11, 13 and 20 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 pre-AIA the applicant regards as the invention. In claims 1-9, 11, 13 and 20, the term “precursor” is vague. The specification does not define the term “precursor.” What are these precursors? Are the precursors embraced by formula (I)? The rejection may be overcome by removing said term from the claims. Regarding claims 1-9, 11, 13 and 20, the term “metabolite” is vague. The specification does not define the term “metabolite.” What are these “metabolites?” Are these “metabolites” the same across species? The rejection may be overcome by removing said term from the claims. With regards to claims 2-7, 9 and 11, the term “preferably” is vague. The claim(s) are considered indefinite because there is a question or doubt as to whether the feature introduced by such narrower language is (a) merely exemplary of the remainder of the claim, and therefore not required, or (b) a required feature of the claims. The rejection may be overcome by removing said term from the claims. The following is a quotation of 35 U.S.C. 112(a): (a) IN GENERAL.—The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor or joint inventor of carrying out the invention. The following is a quotation of 35 U.S.C. 112 (pre-AIA ), first paragraph: The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same and shall set forth the best mode contemplated by the inventor of carrying out his invention. Claims 1-9, 11, 13 and 20 are rejected under 35 U.S.C. 112(a) or 35 U.S.C. 112 (pre-AIA ), first paragraph, as failing to comply with the written description requirement. The claim(s) contains subject matter which was not described in the specification in such a way as to reasonably convey to one skilled in the relevant art that the inventor or a joint inventor, or for pre-AIA the inventor(s), at the time the application was filed, had possession of the claimed invention. This is a written description rejection. The analysis for adequate written description considers the following: (a) Actual reduction to practice; (b) Disclosure of drawings or structural chemical formulas; (c) Sufficient relevant identifying characteristics, such as (i) complete/partial structure, (ii) physical and/or chemical properties, and (iii) functional characteristics when coupled with known or disclosed correlation with structure; and (d) Representative number of samples. A lack of adequate written description issue arises if the knowledge and level of skill in the art would not permit one skilled in the art to immediately envisage the product claimed from the disclosed process. See, e.g., Fujikawa v. Wattanasin, 93 F.3d 1559, 1571,39 USPQ2d 1895, 1905 (Fed. Cir. 1996) (a "laundry list" disclosure of every possible moiety does not constitute a written description of every species in a genus because it would not "reasonably lead" those skilled in the art to any particular species); In re Ruschig, 379 F.2d 990, 995, 154 USPQ 118, 123 (CCPA 1967). An applicant may also show that an invention is complete by disclosure of sufficiently detailed, relevant identifying characteristics which provide evidence that applicant was in possession of the claimed invention, i.e., complete or partial structure, other physical and/or chemical properties, functional characteristics when coupled with a known or disclosed correlation between function and structure, or some combination of such characteristics. In particular, the specification as originally filed fails to provide sufficient written basis for the scope of precursors and metabolites, see also the 112(b) rejections above, which demonstrates a lack of possession of precursors and metabolites. A mere recitation of said terms is not sufficient to comply with the written description requirement. The specification does not provide specific description for “precursor or a metabolite,” and just a mere recitation of “precursor” and “metabolite” As noted in the 112(b) rejections, the scope of precursor and metabolite is not known. A precursor is commonly used in organic synthesis reactions to identify a compound prior to a reaction step. A metabolite is a compound, which has undergone one or more transformations in vivo from the parent compound, in this case, compounds of formula (I). What are these precursors and metabolites? Where does Applicant teach how to make the precursors and metabolites? Did Applicant have possession of the precursors or metabolites? Do the precursors or metabolites still meet the requirements of formula (I) in claim 1? The written description requirement for a claimed genus may be satisfied through sufficient description of a representative number of species by actual reduction to practice, reduction to drawings, or by disclosure of relevant, identifying characteristics, i.e., structure or other physical and/or chemical properties, by functional characteristics coupled with a known or disclosed correlation between function and structure, or by a combination of such identifying characteristics, sufficient to show the applicant was in possession of the claimed genus. See Eli Lilly, 119 F.3d at 1568, 43 USPQ2d at 1406. A "representative number of species" means that the species which are adequately described are representative of the entire genus. Thus, when there is substantial variation within the genus, one must describe a sufficient variety of species to reflect the variation within the genus. The disclosure of only one species encompassed within a genus adequately describes a claim directed to that genus only if the disclosure "indicates that the patentee has invented species sufficient to constitute the gen[us]." The rejection is made under 35 USC 112 (a), as written description is lacking. The rejection may be overcome by removing said terms from the claims. 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 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. 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. (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. Claim(s) 1-9, 11, 13 and 20 is/are rejected under 35 U.S.C. 102(a)(2) as being anticipated by Yang et al. (US 11866452). The reference teaches the following species, see columns 19-20: PNG media_image3.png 320 815 media_image3.png Greyscale . This compound is the same as the elected species, except for when R3= CD3 versus CH3 in the ‘452 patent. Based on natural abundance of hydrogen, the elected species is inherently present. The compositions are taught in column 116. Thus, said claims are anticipated. The applied reference has common inventors 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. Applicant cannot rely upon the certified copy of the foreign priority application to overcome this rejection because a translation of said application has not been made of record in accordance with 37 CFR 1.55. When an English language translation of a non-English language foreign application is required, the translation must be that of the certified copy (of the foreign application as filed) submitted together with a statement that the translation of the certified copy is accurate. See MPEP §§ 215 and 216. Claim(s) 1-9, 11, 13 and 20 is/are rejected under 35 U.S.C. 102(a)(2) as being anticipated by Yang et al. (US 20240109919). The reference teaches the following species, see page 10: PNG media_image3.png 320 815 media_image3.png Greyscale . This compound is the same as the elected species, except for when R3= CD3 versus CH3 in the ‘919 publication. Based on natural abundance of hydrogen, the elected species is inherently present. The compositions are taught on page 55. Thus, said claims are anticipated. The applied reference has common inventors 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. Applicant cannot rely upon the certified copy of the foreign priority application to overcome this rejection because a translation of said application has not been made of record in accordance with 37 CFR 1.55. When an English language translation of a non-English language foreign application is required, the translation must be that of the certified copy (of the foreign application as filed) submitted together with a statement that the translation of the certified copy is accurate. See MPEP §§ 215 and 216. 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. Claim(s) 1-9, 11, 13 and 20 are rejected on the ground of nonstatutory obviousness-type double patenting as being unpatentable over claims 1-2 of U.S. Patent No. 11866452. Although the conflicting claims are not identical, they are not patentably distinct from each other for the same reason provided above in the 102 rejection above. Claim(s) 1-9, 11, 13 and 20 are provisionally rejected on the ground of nonstatutory obviousness-type double patenting as being unpatentable over claims 1-7, 15, 16 and 18 of copending Application No. 18510546 (US 20240109919 publication). Although the conflicting claims are not identical, they are not patentably distinct from each other for the same reason provided above in the 102 rejection above. This is a provisional obviousness-type double patenting rejection because the conflicting claims have not in fact been patented. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to SUSANNA MOORE whose telephone number is (571)272-9046. The examiner can normally be reached Monday - 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, Jeffrey Murray can be reached on 571-272-9023. 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. /SUSANNA MOORE/Primary Examiner, Art Unit 1624
Read full office action

Prosecution Timeline

Aug 29, 2023
Application Filed
Nov 06, 2024
Response after Non-Final Action
Feb 06, 2026
Non-Final Rejection — §102, §112, §DP (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12600717
TRICYCLIC COMPOUNDS AS INHIBITORS OF KRAS
2y 5m to grant Granted Apr 14, 2026
Patent 12583868
JAK INHIBITORS AND METHODS FOR SYNTHESIZING AND USING THEREOF
2y 5m to grant Granted Mar 24, 2026
Patent 12570656
PURINE COMPOUNDS FOR TREATING DISORDERS
2y 5m to grant Granted Mar 10, 2026
Patent 12552810
CRYSTALLINE FORMS OF CFTR MODULATORS
2y 5m to grant Granted Feb 17, 2026
Patent 12552804
TRICYCLIC HETEROCYCLES AS FGFR INHIBITORS
2y 5m to grant Granted Feb 17, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

AI Strategy Recommendation

Get an AI-powered prosecution strategy using examiner precedents, rejection analysis, and claim mapping.
Powered by AI — typically takes 5-10 seconds

Prosecution Projections

1-2
Expected OA Rounds
68%
Grant Probability
99%
With Interview (+32.2%)
3y 0m
Median Time to Grant
Low
PTA Risk
Based on 1237 resolved cases by this examiner. Grant probability derived from career allow 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