Prosecution Insights
Last updated: August 06, 2026
Application No. 18/579,240

ASYMMETRIC GPR84 ANTAGONIST AND USE THEREOF

Final Rejection §112
Filed
Jan 12, 2024
Priority
Jul 15, 2021 — CN 202110801592.7 +1 more
Examiner
BARSKY, JARED
Art Unit
1628
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Shanghai Institute Of Materia Meteria Medica Chinese Academy Of Sciences
OA Round
2 (Final)
50%
Grant Probability
Moderate
3-4
OA Rounds
0m
Est. Remaining
73%
With Interview

Examiner Intelligence

Grants 50% of resolved cases
50%
Career Allowance Rate
469 granted / 933 resolved
-9.7% vs TC avg
Strong +23% interview lift
Without
With
+23.1%
Interview Lift
resolved cases with interview
Typical timeline
2y 7m
Avg Prosecution
77 currently pending
Career history
1015
Total Applications
across all art units

Statute-Specific Performance

§101
2.2%
-37.8% vs TC avg
§103
49.4%
+9.4% vs TC avg
§102
8.5%
-31.5% vs TC avg
§112
16.5%
-23.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 933 resolved cases

Office Action

§112
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 . Claim of Foreign Priority Applicant’s claim of foreign priority and Certified Copy of Foreign Priority Application, and translation of Foreign Priority Documents have been received by the Office. Response to Amendments Applicant’s amendments to the claims of June 4, 2026, in response to the Office Action of March 6, 2026 are acknowledged. Response to Arguments With respect to claim 24, the examiner notes that the role of GPR84 receptor remains not fully developed. For example, Nicol et al., “The Role of G-Protein Receptor 84 in Experimental Neuropathic Pain,” The Journal of Neuroscience, June 10, 2015 • 35(23):8959–8969, explains: “Although GPR84 was discovered well over a decade ago, very little is known about its functional role.” See p8959, 2nd par. Nicol teaches that this appears to be the first study demonstrating a critical role of GPR84 in neuropathic pain. See p8967, 1st full par. “Currently, the signaling pathway of GPR84 is unknown.” P8968, 2nd full par. Overall, there are peripheral roles for GPR84 and they are not all understood and thus, it is not clear that Applicant understood what subject population is in need of antagonizing GPR8r receptors as claimed in claim 24. As previously noted, Aktar et al., “GPR84 in physiology—Many functions in many tissues,” British Pharmacological Society Br J Pharmacol.2024;181:1524–1535, teaches GRP84 may exert an important therapeutic benefit in neurodegenerative disease. “However, the exact role and potential therapeutic relevance of GPR84 in the context of human neurological conditions remains insufficiently explored and warrants further investigation.” P.1531, 2nd par. It is therefore not clear which conditions can be treated by antagonizing GPR84. The instant claims are allowed with the exception of claim 24. It is not clear in the art which conditions are known to be associated with GPR84 such that a subject “in need thereof” is contemplated and identifiable. It is not clear that Applicant possessed knowledge of all subjects able to be treatable with a GPR84 antagonist when this application was filed. Status of the Claims Claims 17-27 are pending and examined. Claims 1-16 are canceled. Allowable Subject Matter Claims 17-23 and 25-27 are allowed. Claim Rejections - 35 USC § 112 (Written Description) Claim 24 is 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. Following reasons apply: Claim 24 is directed to a antagonizing GPR84 in any subject in need thereof. In this particular case, these are alleged to result in the non-obviousness of the instant claims. The only compounds made and/or tested in any manner are described in claim 20 in the instant set of claims. A subject population is similarly not described in the Specification other than to rely on an assay for ability to antagonize CPR84. As such, it is not clear what specific conditions were contemplated for treatment with a claimed agent. The Specification does not describe other nor test claimed compounds in a subject. Claimed invention is not fully described in the specification. The written description requirement implements the principle that a patent must describe the technology that is sought to be patented; the requirement serves both to satisfy the inventor's obligation to disclose the technologic knowledge upon which the patent is based, and to demonstrate that the patentee was in possession of claimed invention. Applicant must convey with reasonable clarity to those skilled in the art that, as of the filing date sought, he or she was in possession of the invention, and demonstrate that by disclosure in the specification of the patent. To satisfy the written description requirement, a patent specification must describe the claimed invention in sufficient detail that one skilled in the art can reasonably conclude that the inventor had possession of the claimed invention. See, e.g., Moba, B.V. v. Diamond Automation, Inc., 325 F.3d 1306, 1319, 66 USPQ2d 1429, 1438 (Fed. Cir. 2003). Written description requirement, serves both to satisfy the inventor's obligation to disclose the technologic knowledge upon which the patent is based, and to demonstrate that the patentee was in possession of the invention that is claimed. A patentee can lawfully claim only what he has invented and described, and if he claims more his patent is void. See MPEP 2163.01-02) for General principles governing compliance with the written description requirement applications. 35 U.S.C. 112(a) and the first paragraph of pre-AIA 35 U.S.C. 112 require that the “specification shall contain a written description of the invention The written description requirement has several policy objectives. “[T]he ‘essential goal’ of the description of the invention requirement is to clearly convey the information that an applicant has invented the subject matter which is claimed.” In re Barker, 559 F.2d 588, 592 n.4, 194 USPQ 470, 473 n.4 (CCPA 1977). Another objective is to convey to the public what the applicant claims as the invention. See Regents of the Univ. of Cal. v. Eli Lilly, 119 F.3d 1559, 1566, 43 USPQ2d 1398, 1404 (Fed. Cir. 1997), cert. denied, 523 U.S. 1089 (1998). "The ‘written description’ requirement implements the principle that a patent must describe the technology that is sought to be patented; the requirement serves both to satisfy the inventor’s obligation to disclose the technologic knowledge upon which the patent is based, and to demonstrate that the patentee was in possession of the invention that is claimed." Capon v. Eshhar, 418 F.3d 1349, 1357, 76 USPQ2d 1078, 1084 (Fed. Cir. 2005). Further, the written description requirement promotes the progress of the useful arts by ensuring that patentees adequately describe their inventions in their patent specifications in exchange for the right to exclude others from practicing the invention for the duration of the patent’s term. Genentech Inc. v. Novo Nordisk A/S (CA FC) 42 USPQ2d 1001, states that “a patent is not a hunting license. It is not a reward for search, but compensation for its successful conclusion" and "patent protection is granted in return for an enabling disclosure of an invention, not for vague intimations of general ideas that may or may not be workable". Whenever the issue of written description arises, the fundamental factual inquiry is whether the specification conveys with reasonable clarity to those skilled in the art that, as of the filing date sought, applicant was in possession of the invention as now claimed. See, e.g., Vas-Cath, Inc. v. Mahurkar, 935 F.2d 1555, 1563-64, 19 USPQ2d 1111, 1117 (Fed. Cir. 1991). An applicant shows possession of the claimed invention by describing the claimed invention with all of its limitations using such descriptive means as words, structures, figures, diagrams, and formulas that fully set forth the claimed invention. Lockwood v. Am. Airlines, Inc., 107 F.3d 1565, 1572, 41 USPQ2d 1961, 1966 (Fed. Cir. 1997). MPEP 2163.02). Whether the written description requirement is satisfied is a fact-based inquiry that will depend on the nature of the claimed invention and the knowledge of one skilled in the art at the time an invention is made and a patent application is filed. The written description requirement is not satisfied by the appearance of mere indistinct words in a specification or a claim, even an original claim. . A description of what a material does, rather than of what it is, usually does not suffice." Enzo, 323 F.3d at 968 (citing Eli Lilly, 119 F.3d at 1568); see Rochester, 358 F.3d at 926 ("[G]eneralized language may not suffice if it does not convey the detailed identity of an invention."). The function of description requirement is to ensure that the inventor had possession, as of filing date of the application relied on, the specific subject matter claimed by him. See Genentech, 108 F 3d 1361, 1365 (Fed. Cir. at 1366, 78, 1999). Written description requirement, a patent specification must describe the claimed invention in sufficient detail that one skilled in the art can reasonably conclude that the inventor had possession of the claimed invention. See, e.g., Moba, B.V. v. Diamond Automation, Inc., 325 F.3d 1306, 1319, 66 USPQ2d 1429, 1438 (Fed. Cir. 2003); Vas-Cath, Inc. v. Mahurkar, 935 F.2d at 1563, 19 USPQ2d at 1116. However, a showing of possession alone does not cure the lack of a written description. Enzo Biochem, Inc. v. Gen-Probe, Inc., 323 F.3d 956, 969-70, 63 USPQ2d 1609, 1617 (Fed. Cir. 2002). For example, it is now well accepted that a satisfactory description may be found in originally-filed claims or any other portion of the originally-filed specification. See In re Koller, 613 F.2d 819, 204 USPQ 702 (CCPA 1980); In re Gardner, 475 F.2d 1389, 177 USPQ 396 (CCPA 1973); In re Wertheim, 541 F.2d 257, 191 USPQ 90 (CCPA 1976). However, that does not mean that all originally-filed claims have adequate written support. The specification must still be examined to assess whether an originally-filed claim has adequate written support. Regardless whether a compound is claimed per se or a method is claimed that entails the use of the compound, the inventor cannot lay claim to that subject matter unless he can provide a description of the compound sufficient to distinguish infringing compounds from non-infringing compounds, or infringing methods from non-infringing methods. Where the specification provides only constructive examples in lieu of working examples, it must still "describe the claimed subject matter in terms that establish that the applicant was in possession of the claimed invention, including all of the elements and limitations. It is suggested to amend the claims to represent the embodiments in the Specification that were possessed at the time of filing. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to JARED D BARSKY whose telephone number is (571)272-2795. The examiner can normally be reached on 9-5 M-F. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Amy Clark can be reached on 571-272-1310. 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. /JARED BARSKY/Primary Examiner, Art Unit 1628
Read full office action

Prosecution Timeline

Jan 12, 2024
Application Filed
Mar 06, 2026
Non-Final Rejection mailed — §112
Jun 04, 2026
Response Filed
Jul 31, 2026
Final Rejection mailed — §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

3-4
Expected OA Rounds
50%
Grant Probability
73%
With Interview (+23.1%)
2y 7m (~0m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 933 resolved cases by this examiner. Grant probability derived from career allowance rate.

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