Prosecution Insights
Last updated: April 19, 2026
Application No. 18/556,178

GPR35 Agonist Compounds

Non-Final OA §112
Filed
Oct 19, 2023
Examiner
HSU, GRACE CHING
Art Unit
1627
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Nxera Pharma UK Limited
OA Round
1 (Non-Final)
75%
Grant Probability
Favorable
1-2
OA Rounds
3y 1m
To Grant
99%
With Interview

Examiner Intelligence

Grants 75% — above average
75%
Career Allow Rate
27 granted / 36 resolved
+15.0% vs TC avg
Strong +27% interview lift
Without
With
+27.3%
Interview Lift
resolved cases with interview
Typical timeline
3y 1m
Avg Prosecution
26 currently pending
Career history
62
Total Applications
across all art units

Statute-Specific Performance

§101
1.9%
-38.1% vs TC avg
§103
18.2%
-21.8% vs TC avg
§102
18.2%
-21.8% vs TC avg
§112
42.2%
+2.2% vs TC avg
Black line = Tech Center average estimate • Based on career data from 36 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. Status This Non-Final Office Action is in response to the October 19 , 2023 Preliminary Amendment and corresponding documents in the above-identified application Claims 1-3, 6-10, 12 -20, 22-25 and 27-33 are pending , c laims 7 , 9, 1 2 , 13, 15, 22-25 and 27 are currently amended, c laims 1-3, 6 , 8, 10 , 14, 16-18 and 28-33 are original and claims 4, 5, 11. 2 1 , 26 are cancelled in the above-identified application. Priority U.S. Pat. Appln . No. 18 / 556 , 178 , F iled : October 19 , 2023 is a 371 Nat.’ l Stage Entry of WO 2022/224212A1 (i.e., PCT/IB2022/053772, Intern .’ l Filing Date: April 22 , 2022 ) , which claims foreign priority to GB 2105846.6, F iled : April 23 , 2021 . Information Disclosure Statement Two ( 2 ) Information Disclosure Statement s (IDS) submitted on December 3 0 , 2024 and October 1 9 , 202 3 is in compliance with the provisions of 37 CFR 1.97. Accordingly, Information Disclosure Statements have been considered by the Examiner. 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 22-25 and 27 are rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA), 2 nd 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(s)), regards as the invention. In particular, c laim 2 2 is rejected for lacking clarity and for being vague, ambiguous and indefinite for recitation of term “conditions” or “visceral conditions” as associated with the following phrase s : “ gastrointestinal disorders or condition s ” ; “ symptoms of pain associated with gastrointestinal diseases or other visceral conditions ” ; and “ pulmonary diseases or conditions ” diseases ; and for not distinguishing between : broad and non-specific terms (i.e., could mean any GI- related or pulmonary related state, from a transient symptom to a severe disease, without defining the scope ) diseases vs conditions GI/Pulmonary Condition A broader term for any state of health affecting the GI or pulmonary system, regardless of whether it is disease or disorder. Visceral Condition A condition affecting the internal organs (viscera) of the GI or pulmonary systems, often involving visceral pain, motility, or function. Lacking structural or functional specificity (i.e., unlike a named disorder, it does not describe a particular pathological process, making it impossible to determine the exact scope of the claimed invention ) . Failing to define the boundaries (i.e., could cover multiple distinct diseases, each with different diagnostic, treatment, and functional impacts, without narrowing to a particular embodiment ) . Such that the claims defined indeterminate phrases and definitions that fail to provide a clear, precise, and enabling definition, such that the metes and bounds of the claims cannot be determined with reasonable certainty by a person of ordinary skill in art. Accordingly, claim 22 should be rewritten to incorporate the specific definitions o f claims 23 to 25, while drawing distinctions between disease s vs condition s as supported by the actual specification or simply amending the claim to remove all term s that recited “conditions ” . Claim 23 recite examples of a broad range or limitation together with a narrow range or limitation that falls within the broad range or limitation (in the same claim ) , which may be considered indefinite if the resulting claim does not clearly set forth the metes and bounds of the patent protection desired. See MPEP § 2173.05(c). In the present instance, claim 23 recites : the broad recitation and the narrower statement of the range/limitation A mast cell related disorders mast cell activation syndrome, clonal mast cell disorder, monoclonal mast cell activation syndrome, idiopathic urticaria, idiopathic anaphylaxis), B infectious diarrhea Clostridium difficile, Salmonella, Shigella toxin Appropriate correction is required accordingly. 2, 3 & 4. Nature Of The Invention, State of the Art and Predictability In The Art. ALLOWABLE SUBJECT MATTER The following is a statement of reasons for the indication of allowable subject matter: Claims 1-3, 6-10, 12-20, 22-25 and 27 contain allowable subject matter ; i.e., as NO prior art was found in the above-identified application . over the prior art . CONCLUSION Any inquiry concerning this communication or earlier communications from the Examiner should be directed to FILLIN "Examiner name" \* MERGEFORMAT GRACE C HSU whose telephone number is FILLIN "Phone number" \* MERGEFORMAT (571) 270-1689 . The Examiner can normally be reached FILLIN "Work Schedule?" \* MERGEFORMAT Monday-Friday 7:30 am - 6 pm . Examiner interviews are available via telephone, in-person, and video conferencing using a USPTO supplied web-based collaboration tool. To schedule an interview, Applicants 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, Kortney L. Klinkel can be reached on 571-270-5239. 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. /G.C.H./ Examiner, Art Unit 162 7 /Kortney L. Klinkel/ Supervisory Patent Examiner, Art Unit 1627
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Prosecution Timeline

Oct 19, 2023
Application Filed
Mar 21, 2026
Non-Final Rejection — §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
75%
Grant Probability
99%
With Interview (+27.3%)
3y 1m
Median Time to Grant
Low
PTA Risk
Based on 36 resolved cases by this examiner. Grant probability derived from career allow rate.

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