Prosecution Insights
Last updated: July 17, 2026
Application No. 18/573,342

CBL-B MODULATORS AND USES THEREOF

Non-Final OA §102§103§DP
Filed
Dec 21, 2023
Priority
Jun 21, 2021 — provisional 63/202,693 +2 more
Examiner
DEKARSKE, MADELINE MCGUIRE
Art Unit
1622
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Nimbus Clio, Inc.
OA Round
1 (Non-Final)
Grant Probability
Favorable
1-2
OA Rounds

Examiner Intelligence

Grants only 0% of cases
0%
Career Allowance Rate
0 granted / 0 resolved
-60.0% vs TC avg
Minimal +0% lift
Without
With
+0.0%
Interview Lift
resolved cases with interview
Typical timeline
Avg Prosecution
62 currently pending
Career history
36
Total Applications
across all art units

Statute-Specific Performance

§103
44.1%
+4.1% vs TC avg
§102
1.2%
-38.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 0 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 . Priority The present application claims priority to the applications: 63/202,693, 63/363,133, and PCT/US2022/073060, with the effective filing dates of 21 June 2021, 18 April 2022, and 21 June 2022. Claim Status This Office Action is in response to Applicant’s Response to Restriction Requirement filed, 14 April 2026. Applicant’s election without traverse of Group I (claims 1, 4-9, 12-14, and 16-23) and Compound ADS-1 ( PNG media_image1.png 146 308 media_image1.png Greyscale ) in the reply filed on 14 April 2026 is acknowledged. Claims 25-26 are withdrawn from further consideration pursuant to 37 CFR 1.142(b) as being drawn to a nonelected group (Group II: claims 25-26), there being no allowable generic or linking claim. Claims 6-9 are withdrawn from further consideration pursuant to 37 CFR 1.142(b) as being drawn to a nonelected species, there being no allowable generic or linking claim. Claim 6 specifies each of Rb, R, Rd, and Re is independently hydrogen, halogen, -CN, -NO2, -CHF2, -CF3, -OR, -SR, -N(R)2, -S(O)2R, -S(O)2N(R)2, -S(O)R, -S(O)N(R)2, - C(O)R, -C(O)OR, -C(O)N(R)2, -C(O)N(R)OR, -OC(O)R, -OC(O)N(R)2, -N(R)C(O)OR, -N(R)C(O)R, -N(R)C(O)N(R)2, -N(R)C(NR)N(R)2, -N(R)N(R)2, -N(R)S(O)2N(R)2, -N(R)S(O)2R, -N=S(O)(R)2, - S(NR)(O)R, -N(R)S(O)R, -N(R)CN, -P(O)(R)N(R)2, -P(O)(R)OR, or -P(O)(R)2; or each of Rb, R, Rd, and Re is independently an optionally substituted group selected from C1-6 aliphatic; phenyl; a 3-7 membered saturated or partially unsaturated monocyclic carbocyclic ring; a 3-7 membered saturated or partially unsaturated monocyclic heterocyclic ring having 1-2 heteroatoms independently selected from nitrogen, oxygen, phosphorous, silicon and sulfur; and a 5-6 membered monocyclic heteroaryl ring having 1--4 heteroatoms independently selected from nitrogen, oxygen, and sulfur; wherein Rc and Re are absent if not allowed by valence, which does not read on the elected species (the elected species requires Rb and Rd together with the atoms to which each are attached forms PNG media_image2.png 129 101 media_image2.png Greyscale ). Claim 7 specifies that Rb and Rc, together with Z1, form a group selected from a 3-7 membered saturated or partially unsaturated monocyclic carbocyclic ring; a 5-6 membered monocyclic aryl ring; a 3-7 membered saturated or partially unsaturated monocyclic heterocyclic ring having 1-2 heteroatoms independently selected from nitrogen, oxygen, phosphorous, silicon and sulfur; and a 5-6 membered monocyclic heteroaryl ring having 1-4 heteroatoms independently selected from nitrogen, oxygen, and sulfur, which does not read on the elected species. Claim 8 specifies that Rd and Re, together with Z2, form a group selected from a 3-7 membered saturated or partially unsaturated monocyclic carbocyclic ring; a 5-6 membered monocyclic aryl ring; a 3-7 membered saturated or partially unsaturated monocyclic heterocyclic ring having 1-2 heteroatoms independently selected from nitrogen, oxygen, phosphorous, silicon and sulfur; and a 5-6 membered monocyclic heteroaryl ring having 1-4 heteroatoms independently selected from nitrogen, oxygen, and sulfur, which does not read on the elected species. Claim 9 specifies that the group, PNG media_image3.png 103 119 media_image3.png Greyscale , is PNG media_image4.png 200 665 media_image4.png Greyscale , which does not read on the elected species. Thus, claims 1, 4-5, 12-14, and 16-23 are under consideration in the instant office action. Information Disclosure Statement The Information Disclosure Statements filed 11 June 2025, 17 July 2025, 21 October 2025, and 21 January 2026 and the reference cited therein have been considered, unless indicated otherwise. Claim Objections 1. Claims 20-22 are objected to because of the following informalities: lack of comma and/or conjunction to separate the options. Claim 20 recites Formula II-a to II-j, but claim 20 does not separate the formulas via comma nor specify a conjunction (i.e. “and” or “or). Similarly, claim 21 recites Formula II-b-1 to II-b-12, and claim 22 recites the compounds of Table 1. However, claims 21 and 22 do not separate the structures via comma nor specify a conjunction. Priority The elected species, PNG media_image1.png 146 308 media_image1.png Greyscale , does not appear in the disclosure of 63/202,693 and is thus denied the benefit of the 21 June 2021 effective filing date. The elected species is present in the provisional application, 63/363,133, and is afforded the 18 April 2022 effective filing date. Accordingly, claims 1, 4-5, 12-14, and 16-23 have the benefit of the 18 April 2022 effective filing date. 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. (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. 2. Claims 1, 4-5, 12-14, 16-17, 19, and 23* are rejected under 35 U.S.C. 102(a)(1) and 102(a)(2) as being anticipated by Barsanti (WO 2019/148005, published 1 Aug 2019, see IDS filed 11 June 2025). *While Applicant elected a compound of Formula (I) ( PNG media_image1.png 146 308 media_image1.png Greyscale ), Barsanti applies to the broader genus, and thus the rejection over the broader genus is made in favor of compact prosecution. However, the Examiner notes that the full genus was not searched. Barsanti teaches Cbl-B inhibitors and specifically teaches Compound 524: PNG media_image5.png 133 228 media_image5.png Greyscale (page 95), which falls into Formula (I). Mapping shown below: 18/573,342 Formula (I) Components 18/573,342 Formula (I) Compound 523 (Barsanti) Ring A 5-6-membered heteroaryl having 1-4 heteroatoms selected from N, O, S PNG media_image6.png 51 51 media_image6.png Greyscale (R1)m C1-6 aliphatic (Me); m = 1 PNG media_image6.png 51 51 media_image6.png Greyscale Z1 C PNG media_image7.png 43 58 media_image7.png Greyscale Rb Ring B PNG media_image7.png 43 58 media_image7.png Greyscale Rc Ring B PNG media_image7.png 43 58 media_image7.png Greyscale Z2 C PNG media_image7.png 43 58 media_image7.png Greyscale Rd Ring B PNG media_image7.png 43 58 media_image7.png Greyscale Re Ring B PNG media_image7.png 43 58 media_image7.png Greyscale Ring C Divalent phenyl PNG media_image8.png 57 42 media_image8.png Greyscale (R3)p R3 = H; p = 1 PNG media_image8.png 57 42 media_image8.png Greyscale Ring D 6-10 membered partially unsaturated fused bicyclic ring having 0-5 heteroatoms selected from N, O, S PNG media_image9.png 103 69 media_image9.png Greyscale (R8)q -CF3 PNG media_image9.png 103 69 media_image9.png Greyscale (L-R9)t L is a C1-4 straight hydrocarbon chain; R9 is a 3-7 membered saturated monocyclic heterocyclic ring having 1-2 heteroatoms selected from N, O, S; t = 1 PNG media_image10.png 77 95 media_image10.png Greyscale Regarding claim 1, Barsanti teaches a compound of Formula I: teaches Compound 524: PNG media_image5.png 133 228 media_image5.png Greyscale (page 95). Regarding claim 4, Barsanti teaches Compound 524: PNG media_image5.png 133 228 media_image5.png Greyscale (page 95), wherein Ring A is PNG media_image11.png 86 105 media_image11.png Greyscale . Regarding claim 5, Barsanti teaches Compound 524: PNG media_image5.png 133 228 media_image5.png Greyscale (page 95), wherein R1 is methyl. Regarding claim 12, Barsanti teaches Compound 524: PNG media_image5.png 133 228 media_image5.png Greyscale (page 95), wherein Ring B is PNG media_image12.png 91 84 media_image12.png Greyscale . Regarding claim 13, Barsanti teaches Compound 524: PNG media_image5.png 133 228 media_image5.png Greyscale (page 95), wherein R2 is PNG media_image13.png 93 80 media_image13.png Greyscale . Regarding claim 14, Barsanti teaches Compound 524: PNG media_image5.png 133 228 media_image5.png Greyscale (page 95), wherein R2 is a C1-6 aliphatic (methyl). Regarding claim 16, Barsanti teaches Compound 524: PNG media_image5.png 133 228 media_image5.png Greyscale (page 95), wherein Ring C is PNG media_image14.png 89 97 media_image14.png Greyscale . Regarding claim 17, Barsanti teaches Compound 524: PNG media_image5.png 133 228 media_image5.png Greyscale (page 95), wherein R3 is H. Regarding claim 19, Barsanti teaches Compound 524: PNG media_image5.png 133 228 media_image5.png Greyscale (page 95), wherein L-R9 is PNG media_image15.png 67 107 media_image15.png Greyscale . Regarding claim 23, Barsanti teaches a pharmaceutical composition ([0006]; [0382]). Claim Rejections - 35 USC § 103 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 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. 3. Claim(s) 1, 4-5, 12-14, and 16-23 are rejected under 35 U.S.C. 103 as being unpatentable over Barsanti (WO 2019/148005, published 1 Aug 2019, see IDS filed 11 June 2025) in view of Liang (WO 2022/169997, filed 3 Feb 2022, see IDS filed 17 July 2025) and Hu (Bioorg. Med. Chem., 2021, 38(116130), 1-11). Barsanti (WO 2019/148005, published 1 Aug 2019, see IDS filed 11 June 2025) is applied as discussed in the 35 U.S.C. 102 rejection above. The Examiner notes the relevant teachings with respect to claims 1, 4-5, 12-14, 16-17, 19, and 23 are set forth above and are incorporated herein by reference. Additional relevant teachings are set forth below. Barsanti teaches Cbl-B inhibitors and specifically teaches Compounds 130a, 168a, 335, and 518: PNG media_image16.png 80 122 media_image16.png Greyscale , PNG media_image17.png 92 145 media_image17.png Greyscale , PNG media_image18.png 109 183 media_image18.png Greyscale , and PNG media_image19.png 106 206 media_image19.png Greyscale , respectively (pages 69, 71, 80, and 94). Barsanti teaches that ubiquitination regulates diverse biology, and that synthesis and degradation of proteins in the cell is critical for cell cycle regulation, cell proliferation, apoptosis, and many other cellular processes ([0003]; [0004]). Barsanti teaches that the ability to modulate the ubiquitin proteasome pathway offers many opportunities to intervene in disease processes, such as enhanced degradation of oncogene products, reduced degradation of tumor-suppressor proteins, and modulation of immune cell response ([0004]). Barsanti further teaches that discovery of agents that modulate E3 enzymes accordingly provides potential therapies directed against disease processes via the E3 enzyme, such as the inhibitors therein ([0005]). Barsanti teaches that Compounds 130a, 168a, 335, and 518 had IC50 values of C, B, A, and B, respectively, wherein A is <100 nM, B is 100 nM ≤ B ≤ 300 nM, and C is 301 nM ≤ C ≤ 1000 nM (pages 795, 796, 800, and 803). Regarding claim 1, Barsanti fails to teach PNG media_image1.png 146 308 media_image1.png Greyscale . Liang teaches Cbl-B inhibitors and specifically teaches Compounds 362 and 373: PNG media_image20.png 118 201 media_image20.png Greyscale and PNG media_image21.png 94 204 media_image21.png Greyscale , respectively (abstract; pages 140 and 142). Liang teaches that Cbl-B is a member of the Cbl family of RING E3 ubiquitin ligases and that a common function of Cbl family proteins is the negative regulation of the receptor tyrosine kinase signaling ([0003]). Liang teaches that Cb-B inhibition leads to immune activation, it has been expected that Cbl-B inhibitors are broadly active in multiple oncology indications ([0003]). Liang further teaches that Cbl-B-deficient mice spontaneously reject a variety of cancer tumors, including spontaneous solid tumors and hematopoietic malignancies ([0008]). Liang additionally teaches that c-Cbl and Cbl-B share high sequence homology at the N-terminus and that compound having activity against both Cbl-B and c-Cbl may still be beneficial if the inhibitory effect against Cbl-B is potent enough ([0010]). Liang teaches that Compounds 362 and 373 have an IC50 of 0.012 mM and 0.020 mM, respectively (pages 429-430). Hu teaches an affinity prediction model for Cbl-B for developing small molecules inhibitors (abstract). Hu teaches that Cb-B participates in regulation of the ubiquitination of many substrates in cells and has been demonstrated to be an important immune checkpoint (page 2, column 1, paragraph 2). Hu teaches that Cbl-B is a novel target for development of small molecule tumor immunotherapy agents but that there are few reports of Cbl-B inhibitors, in particular, small molecules (page 2, column 1, paragraph 2). Hu teaches that there are only two co-crystal structures of Clb-B and the substrate motifs included in the protein data bank (ZAP-70 and EGFR; Zap-70 is a typical Cbl-B substrate) and that studying the Cbl-B substrate recognition pattern with the aid of known motifs is of great significance for the discovery and rational design of new small molecule inhibitors (page 2, column 1, paragraph 2). Hu teaches that the octapeptide, Pep-1 has an IC50 of 10.62 uM, but the pentapeptide, Pep-3, has an IC50 of 7.84 (Table 1, page 4). Hu teaches that the peptide truncation leading to unusual increase in affinity was previously reported on homologous protein c-Cbl and that their model indicated the pentapeptide had an alternative binding model occupying a previously uncharacterized groove (page 4, column 2, paragraph 2). Hu teaches that the acetyl group of the truncated pentapeptide, Pep-3, occupies the hydrophobic site formed by Ala296 and Ile310 during the entire MD simulation of 50 ns (page 4, column 2, paragraph 2; page 5, Figure 4B). Further, Hu teaches that the hydrogen bond occupancy rate with Cys289 and Thr290 increased in Pep-3 due to the acetyl-mediated conformational change to 119.3% (page 4, column 2, paragraph 2). Additionally, Hu teaches the hydrogen bonds of Pep-3 (page 5, Table 3). Further, Hu teaches that their findings are important reference information for guiding the development of Cbl-B small molecule inhibitors (page 6, column 1, paragraph 1). It would have been obvious to one of ordinary skill in the art, prior to the effective filing date of the instantly claimed invention to modify Compound 362 ( PNG media_image20.png 118 201 media_image20.png Greyscale ) of Liang to incorporate (1) fluorophenyl (Compound 168a: PNG media_image17.png 92 145 media_image17.png Greyscale ) akin to Compound 518 ( PNG media_image19.png 106 206 media_image19.png Greyscale ) of Barsanti (pages 71 and 94) to rigidify and affix the bond angles of the western fragment of the molecule and to optimize hydrophobic interactions with Ala296 and Ile310 as taught by Hu (page 4, column 2, paragraph 2; page 5, Figure 4B); (2) a benzoxazole core (Compound 130a: PNG media_image16.png 80 122 media_image16.png Greyscale ) akin to Compound 335 ( PNG media_image18.png 109 183 media_image18.png Greyscale ) of Barsanti to optimize potency (pages 69, 80, 795, and 800) and to reduce the size of the core to remove negative interactions as taught by Hu (Figure 1C; Figure 4B; Figure 7); and (3) the alkylamide chain of Compound 373 ( PNG media_image21.png 94 204 media_image21.png Greyscale ) as taught by Liang to optimize potency (pages 142 and 430) and hydrogen-bonding interactions with Pro71, Cys289, Ser288, and Thr290 (Figure 1D; page 5, column 1, paragraph 1; page 5, column 2, paragraph 1) to arrive at a compound of Formula (I): PNG media_image1.png 146 308 media_image1.png Greyscale . One of ordinary skill in the art would have been motivated to make such a selection, with a reasonable expectation of success, because: -Barsanti teaches Cbl-B inhibitors and specifically teaches Compounds 130a, 168a, 335, and 518: PNG media_image16.png 80 122 media_image16.png Greyscale , PNG media_image17.png 92 145 media_image17.png Greyscale , PNG media_image18.png 109 183 media_image18.png Greyscale , and PNG media_image19.png 106 206 media_image19.png Greyscale , respectively, -Barsanti teaches that ubiquitination regulates diverse biology, and that synthesis and degradation of proteins in the cell is critical for cell cycle regulation, cell proliferation, apoptosis, and many other cellular processes, -Barsanti teaches that the ability to modulate the ubiquitin proteasome pathway offers many opportunities to intervene in disease processes, such as enhanced degradation of oncogene products, reduced degradation of tumor-suppressor proteins, and modulation of immune cell response, -Barsanti teaches that discovery of agents that modulate E3 enzymes accordingly provides potential therapies directed against disease processes via the E3 enzyme, such as the inhibitors therein, -Barsanti teaches that Compounds 130a, 168a, 335, and 518 had IC50 values of C, B, A, and B, respectively, wherein A is <100 nM, B is 100 nM ≤ B ≤ 300 nM, and C is 301 nM ≤ C ≤ 1000 nM, -Liang teaches Cbl-B inhibitors and specifically teaches Compounds 362 and 373: PNG media_image20.png 118 201 media_image20.png Greyscale and PNG media_image21.png 94 204 media_image21.png Greyscale , respectively, -Liang teaches that Cbl-B is a member of the Cbl family of RING E3 ubiquitin ligases and that a common function of Cbl family proteins is the negative regulation of the receptor tyrosine kinase signaling, -Liang teaches that Cb-B inhibition leads to immune activation, it has been expected that Cbl-B inhibitors are broadly active in multiple oncology indications, -Liang teaches that Cbl-B-deficient mice spontaneously reject a variety of cancer tumors, including spontaneous solid tumors and hematopoietic malignancies, -Liang teaches that c-Cbl and Cbl-B share high sequence homology at the N-terminus and that compound having activity against both Cbl-B and c-Cbl may still be beneficial if the inhibitory effect against Cbl-B is potent enough, -Liang teaches that Compounds 362 and 373 have an IC50 of 0.012 mM and 0.020 mM, respectively, -Hu teaches an affinity prediction model for Cbl-B for developing small molecules inhibitors, -Hu teaches that Cb-B participates in regulation of the ubiquitination of many substrates in cells and has been demonstrated to be an important immune checkpoint, -Hu teaches that that Cbl-B is a novel target for development of small molecule tumor immunotherapy agents but that there are few reports of Cbl-B inhibitors, in particular, small molecules, -Hu teaches that there are only two co-crystal structures of Clb-B and the substrate motifs included in the protein data bank (ZAP-70 and EGFR; Zap-70 is a typical Cbl-B substrate) and that studying the Cbl-B substrate recognition pattern with the aid of known motifs is of great significance for the discovery and rational design of new small molecule inhibitors, -Hu teaches that the octapeptide, Pep-1 has an IC50 of 10.62 mM, but the pentapeptide, Pep-3, has an IC50 of 7.84, -Hu teaches that the peptide truncation leading to unusual increase in affinity was previously reported on homologous protein c-Cbl and that their model indicated the pentapeptide had an alternative binding model occupying a previously uncharacterized groove, -Hu teaches that the acetyl group of the truncated pentapeptide, Pep-3, occupies the hydrophobic site formed by Ala296 and Ile310 during the entire MD simulation of 50 ns, -Hu teaches that the hydrogen bond occupancy rate with Cys289 and Thr290 increased in Pep-3 due to the acetyl-mediated conformational change to 119.3%, -Hu teaches the hydrogen bonds of Pep-3, -Hu teaches hydrogen-bonding interactions with Pro71, Cys289, Ser288, and Thr290 (Figure 1D; page 5, column 1, paragraph 1; page 5, column 2, paragraph 1), and -Hu teaches that their findings are important reference information for guiding the development of Cbl-B small molecule inhibitors. Further, structural relationships may provide the requisite motivation or suggestion to modify known compounds to obtain new compounds. For example, a prior art compound may suggest its homologs because homologs often have similar properties and therefore chemists of ordinary skill would ordinarily contemplate making them to try to obtain compounds with improved properties. See, e.g., Dillon, 919 F.2d at 693, 696, 16 USPQ2d at 1901, 1904. See also In re Deuel, 51 F.3d 1552, 1558, 34 USPQ2d 1210, 1214 (Fed. Cir. 1995). Additionally, structural similarities have been found to support a prima facie case of obviousness. See, e.g., In re May, 574 F.2d 1082, 1093- 95, 197 USPQ 601, 610-11 (CCPA 1978) (stereoisomers); In re Wilder, 563 F.2d 457, 460, 195 USPQ 426, 429 (CCPA 1977) (adjacent homologs and structural isomers); In re Hoch, 428 F.2d 1341, 1344, 166 USPQ 406, 409 (CCPA 1970) (acid and ethyl ester); In re Druey, 319 F.2d 237, 240, 138 USPQ 39, 41 (CCPA 1963) (omission of methyl group from pyrazole ring). Generally, some teaching of a structural similarity will be necessary to suggest selection of the claimed species or subgenus. The closer the physical and/or chemical similarities between the claimed species or subgenus and any exemplary species or subgenus disclosed in the prior art, the greater the expectation that the claimed subject matter will function in an equivalent manner to the genus. See, e.g., Dillon, 919 F.2d at 696, 16 USPQ2d at 1904 (and cases cited therein). See MPEP § 2144.08(II)(A)(4)(c). As the compound of Liang (Compound 373) differs from the elected species of the claimed invention via a methyl (methyl to hydrogen), a person of ordinary skill in the art would expect the compounds to have similar properties and thus would contemplate making them to try and obtain compounds with improved properties. Thus, Liang teaches that L-R9 is PNG media_image22.png 55 109 media_image22.png Greyscale . As such, an artisan having ordinary skill in the art would have been motivated to substitute one known element for another to predictably arrive at a compound of Formula (I): PNG media_image1.png 146 308 media_image1.png Greyscale . Regarding claim 4, Liang teaches Compound 362: PNG media_image20.png 118 201 media_image20.png Greyscale (abstract; page 140), wherein Ring A is PNG media_image23.png 91 114 media_image23.png Greyscale . Barsanti teaches Cbl-B inhibitors and specifically teaches Compounds 130a, 168a, 335, and 518: PNG media_image16.png 80 122 media_image16.png Greyscale , PNG media_image17.png 92 145 media_image17.png Greyscale , PNG media_image18.png 109 183 media_image18.png Greyscale , and PNG media_image19.png 106 206 media_image19.png Greyscale , respectively (pages 69, 71, 80, and 94), wherein Ring A is PNG media_image23.png 91 114 media_image23.png Greyscale . Regarding claim 5, Liang teaches Compound 362: PNG media_image20.png 118 201 media_image20.png Greyscale (abstract; page 140), wherein R1 is methyl. Barsanti teaches Cbl-B inhibitors and specifically teaches Compounds 130a, 168a, 335, and 518: PNG media_image16.png 80 122 media_image16.png Greyscale , PNG media_image17.png 92 145 media_image17.png Greyscale , PNG media_image18.png 109 183 media_image18.png Greyscale , and PNG media_image19.png 106 206 media_image19.png Greyscale , respectively (pages 69, 71, 80, and 94), wherein R1 is methyl. Regarding claim 12, Barsanti teaches Compound 168a: PNG media_image17.png 92 145 media_image17.png Greyscale (page 71), wherein Ring B is PNG media_image24.png 84 103 media_image24.png Greyscale . Regarding claim 13, Barsanti teaches Compounds 168a and 518: PNG media_image17.png 92 145 media_image17.png Greyscale and PNG media_image19.png 106 206 media_image19.png Greyscale , respectively (pages 71 and 94), wherein Ring B with its R2 substituent is fluorophenyl: PNG media_image25.png 95 66 media_image25.png Greyscale . Regarding claim 14, Barsanti teaches Compounds 168a and 518: PNG media_image17.png 92 145 media_image17.png Greyscale and PNG media_image19.png 106 206 media_image19.png Greyscale , respectively (pages 71 and 94), wherein R2 is fluoro. Regarding claim 16, Liang teaches Compound 362: PNG media_image20.png 118 201 media_image20.png Greyscale (abstract; page 140), wherein Ring C is PNG media_image26.png 92 93 media_image26.png Greyscale . Regarding claim 17, Liang teaches Compound 362: PNG media_image20.png 118 201 media_image20.png Greyscale (abstract; page 140), wherein R3 is a 3-7 membered saturated monocyclic carbocyclic ring. Regarding claim 18, Barsanti teaches Compounds 130a and 335: PNG media_image16.png 80 122 media_image16.png Greyscale and PNG media_image18.png 109 183 media_image18.png Greyscale , respectively (pages 69, 80, 795, and 800), wherein Ring D is PNG media_image27.png 107 153 media_image27.png Greyscale . Regarding claim 19, Liang teaches Compound 373: PNG media_image21.png 94 204 media_image21.png Greyscale (page 142). Further, structural relationships may provide the requisite motivation or suggestion to modify known compounds to obtain new compounds. For example, a prior art compound may suggest its homologs because homologs often have similar properties and therefore chemists of ordinary skill would ordinarily contemplate making them to try to obtain compounds with improved properties. See, e.g., Dillon, 919 F.2d at 693, 696, 16 USPQ2d at 1901, 1904. See also In re Deuel, 51 F.3d 1552, 1558, 34 USPQ2d 1210, 1214 (Fed. Cir. 1995). Additionally, structural similarities have been found to support a prima facie case of obviousness. See, e.g., In re May, 574 F.2d 1082, 1093- 95, 197 USPQ 601, 610-11 (CCPA 1978) (stereoisomers); In re Wilder, 563 F.2d 457, 460, 195 USPQ 426, 429 (CCPA 1977) (adjacent homologs and structural isomers); In re Hoch, 428 F.2d 1341, 1344, 166 USPQ 406, 409 (CCPA 1970) (acid and ethyl ester); In re Druey, 319 F.2d 237, 240, 138 USPQ 39, 41 (CCPA 1963) (omission of methyl group from pyrazole ring). Generally, some teaching of a structural similarity will be necessary to suggest selection of the claimed species or subgenus. The closer the physical and/or chemical similarities between the claimed species or subgenus and any exemplary species or subgenus disclosed in the prior art, the greater the expectation that the claimed subject matter will function in an equivalent manner to the genus. See, e.g., Dillon, 919 F.2d at 696, 16 USPQ2d at 1904 (and cases cited therein). See MPEP § 2144.08(II)(A)(4)(c). As the compound of Liang (Compound 373) differs from the elected species of the claimed invention via a methyl (methyl to hydrogen), a person of ordinary skill in the art would expect the compounds to have similar properties and thus would contemplate making them to try and obtain compounds with improved properties. Thus, Liang teaches that L-R9 is PNG media_image22.png 55 109 media_image22.png Greyscale . Regarding claim 20, Barsanti teaches Compounds 168a and 518: PNG media_image17.png 92 145 media_image17.png Greyscale and PNG media_image19.png 106 206 media_image19.png Greyscale , respectively (pages 71 and 94). Barsanti also teaches Compounds 130a and 335: PNG media_image16.png 80 122 media_image16.png Greyscale and PNG media_image18.png 109 183 media_image18.png Greyscale , respectively (pages 69, 80, 795, and 800). Liang teaches Compounds 362 and 373: PNG media_image20.png 118 201 media_image20.png Greyscale and PNG media_image21.png 94 204 media_image21.png Greyscale , respectively (abstract; pages 140 and 142). Thus, the combination of Barsanti and Liang teaches a compound of Formula II-b: PNG media_image28.png 151 256 media_image28.png Greyscale . Regarding claim 21, Barsanti teaches Compounds 168a and 518: PNG media_image17.png 92 145 media_image17.png Greyscale and PNG media_image19.png 106 206 media_image19.png Greyscale , respectively (pages 71 and 94). Barsanti also teaches Compounds 130a and 335: PNG media_image16.png 80 122 media_image16.png Greyscale and PNG media_image18.png 109 183 media_image18.png Greyscale , respectively (pages 69, 80, 795, and 800). Liang teaches Compounds 362 and 373: PNG media_image20.png 118 201 media_image20.png Greyscale and PNG media_image21.png 94 204 media_image21.png Greyscale , respectively (abstract; pages 140 and 142). Thus, the combination of Barsanti and Liang teaches a compound of Formula II-b-9: PNG media_image29.png 177 296 media_image29.png Greyscale . Regarding claim 22, Barsanti teaches Compounds 168a and 518: PNG media_image17.png 92 145 media_image17.png Greyscale and PNG media_image19.png 106 206 media_image19.png Greyscale , respectively (pages 71 and 94). Barsanti also teaches Compounds 130a and 335: PNG media_image16.png 80 122 media_image16.png Greyscale and PNG media_image18.png 109 183 media_image18.png Greyscale , respectively (pages 69, 80, 795, and 800). Liang teaches Compounds 362 and 373: PNG media_image20.png 118 201 media_image20.png Greyscale and PNG media_image21.png 94 204 media_image21.png Greyscale , respectively (abstract; pages 140 and 142). Thus, the combination of Barsanti and Liang teaches the compound, PNG media_image30.png 144 318 media_image30.png Greyscale . Regarding claim 23, Liang teaches a pharmaceutical composition ([0207]). Additionally, Barsanti teaches a pharmaceutical composition ([0006]; [0382]). 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. 4. Claim 1, 4-5, 12-13, 16-17, and 23 are rejected on the ground of nonstatutory double patenting as being unpatentable over claim 1 and 7-8 of U.S. Patent No. 12,325,697. Although the claims at issue are not identical, they are not patentably distinct from each other. U.S. Patent No. 12,325,697 teaches the general formula, PNG media_image31.png 142 238 media_image31.png Greyscale and specifically teaches the compound, PNG media_image32.png 164 230 media_image32.png Greyscale (claims 1 and 7). Additionally, ‘697 teaches a pharmaceutical composition of the compounds therein (claim 8). The compound, PNG media_image32.png 164 230 media_image32.png Greyscale , falls into Formula (I). Mapping shown below: 18/573,342 Formula (I) Components 18/573,342 Formula (I) ‘697 (claim 7, column 1101) Ring A 5-6-membered heteroaryl having 1-4 heteroatoms selected from N, O, S PNG media_image33.png 67 57 media_image33.png Greyscale (R1)m C1-6 aliphatic (Me); m = 1 PNG media_image33.png 67 57 media_image33.png Greyscale Z1, Z2 C PNG media_image34.png 59 59 media_image34.png Greyscale Rb, Rd [Wingdings font/0xE0] Ring B PNG media_image35.png 136 103 media_image35.png Greyscale PNG media_image34.png 59 59 media_image34.png Greyscale (R2)n n = 0 PNG media_image34.png 59 59 media_image34.png Greyscale Ring C 6-membered heteroaryl having 1-4 heteroatoms: N, O, S PNG media_image36.png 99 89 media_image36.png Greyscale (R3)p R3 = 3-7-membered saturated monocyclic carbocyclic ring; p = 1 PNG media_image36.png 99 89 media_image36.png Greyscale Ring D 6-10 membered partially unsaturated fused bicyclic ring having 0-5 heteroatoms selected from N, O, S PNG media_image37.png 140 85 media_image37.png Greyscale (R8)q -CF3 PNG media_image37.png 140 85 media_image37.png Greyscale (L-R9)t L = covalent bond; R9 = C(O)R; R = C1-6 aliphatic (Me); t = 0 PNG media_image38.png 80 47 media_image38.png Greyscale As such, ‘697 anticipates claim 1. Regarding claim 4, ‘697 teaches the compound, PNG media_image32.png 164 230 media_image32.png Greyscale (claims 1 and 7), wherein Ring A is PNG media_image11.png 86 105 media_image11.png Greyscale . Regarding claim 5, ‘697 teaches the compound, PNG media_image32.png 164 230 media_image32.png Greyscale (claims 1 and 7), wherein R1 is methyl. Regarding claim 12, ‘697 teaches the compound, PNG media_image32.png 164 230 media_image32.png Greyscale (claims 1 and 7), wherein PNG media_image39.png 82 72 media_image39.png Greyscale . Regarding claim 13, ‘697 teaches the compound, PNG media_image32.png 164 230 media_image32.png Greyscale (claims 1 and 7), wherein PNG media_image40.png 89 101 media_image40.png Greyscale . Regarding claim 16, ‘697 teaches the compound, PNG media_image32.png 164 230 media_image32.png Greyscale (claims 1 and 7), wherein Ring C is PNG media_image41.png 88 101 media_image41.png Greyscale . Regarding claim 17, ‘697 teaches the compound, PNG media_image32.png 164 230 media_image32.png Greyscale (claims 1 and 7), wherein R3 is a 3-7-membered saturated monocyclic carbocyclic ring. Regarding claim 23, ‘697 teaches a pharmaceutical composition of the compounds therein (claim 8). Conclusion No claim is allowed. Any inquiry concerning this communication or earlier communications from the examiner should be directed to Madeline M Dekarske whose telephone number is (571)272-1789. The examiner can normally be reached Monday - Thursday 10am - 4pm. 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, James Alstrum-Acevedo can be reached at 571-272-5548. 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. /MADELINE M. DEKARSKE/Examiner, Art Unit 1622 /JAMES H ALSTRUM-ACEVEDO/Supervisory Patent Examiner, Art Unit 1622
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Prosecution Timeline

Dec 21, 2023
Application Filed
May 27, 2026
Non-Final Rejection mailed — §102, §103, §DP (current)

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Prosecution Projections

1-2
Expected OA Rounds
Grant Probability
Low
PTA Risk
Based on 0 resolved cases by this examiner. Grant probability derived from career allowance rate.

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