Prosecution Insights
Last updated: April 19, 2026
Application No. 18/572,399

ERK1/2 AND KRAS G12C INHIBITORS COMBINATION THERAPY

Non-Final OA §103§112§DP
Filed
Dec 20, 2023
Examiner
ANDERSON, REBECCA L
Art Unit
1626
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Erasca Inc.
OA Round
1 (Non-Final)
73%
Grant Probability
Favorable
1-2
OA Rounds
2y 5m
To Grant
97%
With Interview

Examiner Intelligence

Grants 73% — above average
73%
Career Allow Rate
749 granted / 1022 resolved
+13.3% vs TC avg
Strong +24% interview lift
Without
With
+24.0%
Interview Lift
resolved cases with interview
Typical timeline
2y 5m
Avg Prosecution
44 currently pending
Career history
1066
Total Applications
across all art units

Statute-Specific Performance

§101
0.6%
-39.4% vs TC avg
§103
17.0%
-23.0% vs TC avg
§102
25.0%
-15.0% vs TC avg
§112
31.8%
-8.2% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1022 resolved cases

Office Action

§103 §112 §DP
DETAILED ACTION Claims 1, 2, 9, 10, 13, 16, 29, 30, 40, 50-53, 70, 75, 80, 8, 90, and 97 are currently pending and are rejected. 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 . 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. Claim 1, 2, 9, 10, 13, 16, 29, 30, 40, 50-53, 70, 75, 80, 89, 90, and 97 are provisionally rejected on the ground of nonstatutory double patenting as being unpatentable over claim 1, 3, 30, 39, 41, 42, 45, 57-63, 65, 85, 86, 88-90, 94, 95, 107, 112, 127, and 134 of copending Application No. 18/572,404 (reference application). Although the claims at issue are not identical, they are not patentably distinct from each other because the conflicting claims provide a method of treating cancer with the formula: PNG media_image1.png 144 330 media_image1.png Greyscale with one or more of osimertinib, cetuximab, encorafenib, gilteritinib, sotorasib, adagrasib, or palbociclib. This corresponds to the instant claims wherein the compound 1 is administered with a KSR G12C inhibitor (instant claim 1), such as sotorasib or adagrasib (instant claim 2). The conflicting claims also provide types of cancer (MAPK) pathway driven cancer (conflicting claim 39), at least one mutation such as RAS (conflicting claim 42), with a mutation such as V600E (conflicting claim 45), wherein the cancer is NSCLC, CRC, pancreatic cancer or melanoma (conflicting claim 63), administration such as between 25-300mg/day (conflicting claim 107), such as once a day (conflicting claim 112), additionally comprising an MAPK pathway inhibitor (conflicting claim 127), such as adagrasib or afatinib (conflicting claim 134), which corresponds to the limitations in applicant’s instant dependent claims 2, 9, 10, 13, 16, 29, 30, 40, 50-53, 70, 75, 80, 89, 90, and 97. This is a provisional nonstatutory double patenting rejection because the patentably indistinct claims have not in fact been patented. Claim Rejections - 35 USC § 112 The following is a quotation of the first paragraph 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 the first paragraph of pre-AIA 35 U.S.C. 112: 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, 2, 9, 10, 13, 16, 29, 30, 40, 50-53, 70, 75, 80, 89, 90, and 97 are rejected under 35 U.S.C. 112(a) or 35 U.S.C. 112 (pre-AIA ), first paragraph, because the specification, while being enabling for the treatment of non-small cell lung cancer, pancreatic cancer, melanoma, or colorectal cancer with a combination of the compound I and adagrasib, tipifarnib, and/or sotorasib, does not reasonably provide enablement for the combination with any KRAS G12C inhibitor or the treatment of any and all cancers. The specification does not enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make or use the invention commensurate in scope with these claims. Pursuant to In re Wands, 858 F.2d 731, 737, 8 USPQ2d 1400, 1404 (Fed. Cir. 1988), one considers the following factors to determine whether undue experimentation is required: (1) The breadth of the claims, (2) The nature of the invention, (3) The state of the prior art, (4) The level of one of ordinary skill, (5) The level of predictability in the art, (6) The amount of direction provided by the inventor, (7) The existence of working examples and (8) The quantity of experimentation needed to make or use the invention based on the content of the disclosure. Nature of the invention: The invention is drawn to a method of treating cancer comprising administering a compound of Formula I in combination with a KRAS G12C inhibitor. Breadth of the invention: The scope of the claimed invention is very broad, as it is drawn to the treatment of any cancer, in general. This encompasses a myriad of conditions with distinct etiologies. State of the prior art and predictability in the art: No compound has ever been found to treat cancers of all types generally. Since this assertion is contrary to what is known in medicine, proof must be provided that this revolutionary assertion has merits. The existence of such a “silver bullet” is contrary to our present understanding of oncology. The state of the art is not indicative of any pharmaceutical agents that are useful in the treatment of cancer generally. At Page 1004, Cecil Textbook of Medicine states that “each specific type has unique biologic and clinical features that must be appreciated for proper diagnosis, treatment and study”. Different types of cancers affect different organs and have different methods of growth and harm to the body. Also see In re Buting, 163 USPQ 689 (CCPA 1969), wherein ‘evidence involving a single compound and two types of cancer, was held insufficient to establish the utility of the claims directed to disparate types of cancers’. Thus, it is beyond the skill of oncologists today to get an agent to be effective against cancers generally. A similar statement appears at In re Application of Hozumi et. al., 226 USPQ 353: “In spite of the vast expenditure of human and capital resources in recent years, no one drug has been found which is effective in treating all types of cancer. Cancer is not a simple disease, nor is it even a single disease, but a complex of a multitude of different entities, each behaving in a different way”. There are compounds that treat a modest range of cancers, but no one has ever been able to figure out how to get a compound to be effective against cancer generally, or even a majority of cancers. The attempts to find compounds to treat the various cancers arguably constitute the single most massive enterprise in all of pharmacology. This has not resulted in finding any treatment for tumors generally. This is because it is now understood that there is no “master switch” for cancers generally; cancers arise from a bewildering variety of differing mechanisms. Even the most broadly effective antitumor agents are only effective against a small fraction of the vast number of different cancers known. This is true in part because cancers arise from a wide variety of sources, primarily a wide variety of failures of the body’s cell growth regulatory mechanisms, but also such external factors such as viruses (an estimated at least 20% are of viral origin e.g. Human papillomavirus, EBV, Hepatitis B and C, HHV-8, HTLV-1 and other retroviruses, and quite possibly Merkel cell polyomavirus, and there is some evidence that CMV is a causative agent in glioblastoma), exposure to chemicals such as tobacco tars, excess alcohol consumption (which causes hepatic cirrhosis, an important cause of HCC), ionizing radiation, and unknown environmental factors. Similarly, In re Novak, 134 USPQ 335, 337-338 says “unless one with ordinary skill in the art would accept those allegations as obviously valid and correct, it is proper for the examiner to ask for evidence which substantiates them.” There is no such evidence in this case for a compound that treats all types of cancer. Likewise, In re Cartright, 49 USPQ2d 1464, states: “Moreover, we have not been shown that one of ordinary skill would necessarily conclude from the information expressly disclosed by the written description that the active ingredient” does what the specification surmises that it does. That is exactly the case here. Moreover, even if Applicant’s assertion that cancer in general could be treated with these compounds were plausible -- which it is not --, that “plausible” would not suffice, as was stated in Rasmusson v. SmithKline Beecham Corp., 75 USPQ2d 1297, 1301: “If mere plausibility were the test for enablement under section 112, applicants could obtain patent rights to “inventions” consisting of little more than respectable guesses as to the likelihood of their success. Recently, Wu et. al. (“Small-molecule inhibitors, immune checkpoint inhibitors, and more: FDA- approved novel therapeutic drugs for solid tumors from 1991 to 2021; Journal of Hematology & Oncology, 15, 143, 2022; hereinafter referred to as Wu), at the Abstract, discloses that between 1991 and 2021 there have been 228 new cancer drugs approved by the U.S. Food and Drug Administration of which 120 of these are drawn to the treatment of solid tumors alone. At Page 5, Table 1 Wu teaches that there are 21 different approved drugs for treating lung cancers, some of which have cellular targets. At Page 10, Table 2, Wu teaches breast cancer has 22 different drugs that have varied cellular targets and are indicated for different types of breast cancer. At Page 17, Table 4, Wu teaches there are 17 different drugs available to treat different forms of gastrointestinal cancers. At Page 38, Figure 12, Wu summarizes the protein structure of some cellular targets and the binding site of their respective drugs. Taken together, Wu teaches that no single therapeutic has ever been identified as a treatment for all forms of cancer; and closer examination of Figure 12 provides a logical explanation. As highlighted in Figure 12, molecular protein targets implicated in different cancers (e.g. EGFR for lung cancer in Table 1, VEGFR2 for gastric cancer in Table 4) have different three-dimensional protein structures, different active sites, and therefore require different drugs with the right shape and chemical groups in order to bind the target active site and have an effect in treating cancer. In other words, there is no one size fits all approach to treating cancer simply for the reason that no single molecule will have the shape and chemical functional groups necessary to bind and modulate all modular targets of cancer, all of which have varied shapes. It is commonly known in the pharmaceutical arts that shape dictates function wherein drugs which have a shape complimentary to the protein target will bind and have an effect (this is often referred to simplistically as a “Lock and Key” model). Given the varied shape of protein targets in cancer (e.g. EGFR and VEGFR2), it is speculative that a single drug with a single three dimensional shape will bind all protein targets implicated in cancer therapy and have an effect in treating all forms of the disease. As such, at present the “silver bullet” drug therapy to treat all forms of cancer is elusive and such a therapy is not recognized in the art where the reality is that different forms of cancer require different drug therapies. Level of ordinary skill in the art: An ordinary artisan in the area of drug development would have experience in synthesizing chemical compounds for particular activities. The synthesis of new drug candidates, while complex, is routine in the art. The process of finding new drugs that have in vitro activity against a particular biological target (i.e., receptor, enzyme, etc.) is well known. Additionally, while high throughput screening assays can be employed, developing a therapeutic method, as claimed, prior to synthesizing and testing compounds is generally not well-known or routine, given the complexity of certain biological systems. The amount of direction provided and working examples: Beginning at Page 25 of the instant specification, Examples 1 and 2 sufficiently discloses the efficacy of the claimed combination of compound I with Sotorasib or Adagrasib as recited in instant Claim 1 in inhibiting cell proliferation in cell lines for pancreatic cancer and colorectal cancer, and non-small cell lung cancer. Examples 3 further support the efficacy of the claimed combination in treating non-small-cell lung cancer with compound I and sotorasib. Examples 4 and 5 are assay tests for colorectal cancer with the compound I and sotorasib. Example 6 is assay tests for NSCLC with the compound I and sotorasib. Taken together, the Applicant has sufficiently disclosed the efficacy of the disclosed combination of compound I with sotorasib or adegrasib for the treatment of pancreatic cancer, colorectal cancer, or non-small cell lung cancer. These limited examples, however, are insufficient to guide a person having ordinary skill in the art to a method of treating other cancers or combinations with any KRAS G12C inhibitor. Doing so would require undue experimentation, as suitable cell lines/and or models must be identified and/or developed to determine the efficacy of treatment with the claimed combination, and a person having ordinary skill in the art would need to deploy these models, with no assurance of success. MPEP § 2164.01(a) states, “A conclusion of lack of enablement means that, based on the evidence regarding each of the above factors, the specification at the time the application was filed, would not have taught one skilled in the art how to make and/or use the full scope of the claimed invention without undue experimentation. In re Wright, 999 F.2d 1557, 1562, 27 USPQ2d 1510, 1513 (Fed. Cir. 1993).” That conclusion is clearly justified here that Applicant is not enabled for treating cancers in general beyond non-small cell lung cancer, pancreatic cancer, melanoma, and colorectal cancer with a combination of the compound 1, and sotorasib tipifarnib, and/or adagrasib. 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. Claim 16 is 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 applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention. Claim 16 states “EGFR splice variant (VIII, Vvi, or Vii). It is unclear if what is in the parenthesis is an example or a limitation for the EGFR splice variant. Claim 90 and it’s dependent claim 97 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 applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention. Claim 90 recites the limitation “further comprising administering an additional MAPK pathway inhibitor” in the method of claim 1. There is insufficient antecedent basis for this limitation in the claim as there is not a first “MAPK pathway inhibitor as claim 1 has the compound I and a KRAS G12C inhibitor, with no mention of a MAPK pathway inhibitor, claim 1, from which Claim 90 depends is silent with respect to limitations specifying inhibition of the MAPK pathway. Claim 97, as ultimately dependent upon claim 1, is rejected for the same reasoning. 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. Claim(s) 1, 2, 9, 10, 13, 16, 29, 30, 40, 50-53, 70, 75, 80, 89, 90, and 97 is/are rejected under 35 U.S.C. 103 as being unpatentable over US Pre-Grant Publication 2016/0362406 in view of Pelaia et. al. (“Effects of statins and farnesyl transferase inhibitors on ERK phosphorylation, apoptosis and cell viability in non-small lung cancer cells”, Cell Prolif. 2012; hereinafter referred to as Pelaia) further in view of Keating (“Afatinib: A Review of Its Use in the Treatment of Advanced Non-Small Cell Lung Cancer”, Adis Drug Evaluation, 2014; hereinafter referred to as Keating) or in view of Hong (“KRASG12C inhibition with Sotorasib in Advanced Solid Tumors”, N ENGL. J MED 383; 13, pages 1207-1217, September 24, 2020, hereinafter referred to as Hong) further in view of Keating (“Afatinib: A Review of Its Use in the Treatment of Advanced Non-Small Cell Lung Cancer”, Adis Drug Evaluation, 2014; hereinafter referred to as Keating). Determining the scope and contents of the prior art (See MPEP 2141.01) US Pre-Grant Publication 2016/0362406 discloses compounds of the formula I, page 1: PNG media_image2.png 196 396 media_image2.png Greyscale and a pharmaceutically acceptable salt thereof. Page 22 provides salts such as of mandelic acid. Page 24 provides pharmaceutical compositions including with other therapeutic agents. Dosages are provided on page 25, including such as 25mg/kg and 300mg/kg, and daily, weekly, every 12 hours, every 24 hours, about every week, etc., . Paragraph [0353] provides oral administration. Page 26 provides combination with other agents useful to treat cancers, paragraph [0359]. Page 27 provides cancers to be treated including lung cancer, colon cancer, pancreas cancer, and melanoma. Page 27, paragraph [0373] discloses that the cancer may have mutations such as B-RAF V600E, KRAS mutations. A specific compound disclosed is found on page 77, example 24, compound #275 (also Table 1, page 138): PNG media_image3.png 216 400 media_image3.png Greyscale which corresponds to applicant’s compound 1. Table 2 provides biochemical, mechanistic and proliferation cell-based assay results with the compound 275, page 156, with each Assay having A as the result which corresponds to and IC50 value less than 50nM against ERK1, ERK2, RSK1, Phos HT29, and HCT116, which are tumor cell ines with mutations I the RAS/BRAF/MEK/ERK pathway, paragraph [0372]. At Page 558, First Column, last Paragraph Pelaia teaches R115777 is tipifarnib. At Page 557, first Paragraph, Pelaia teaches the aim of this study was to investigate the effects of R115777 on two cultures of non-small lung cancer cells, adenocarcinoma (GLC-82) and squamous (CALU-1). Further, at Page 557, under “Results and conclusion”, Pelaia teaches R115777 exerts anti-proliferative activity in both GLC-82 and CALU-1 cell lines. At Page 207, under “Abstract”, Keating teaches Afatinib, recited as a suitable MAPK pathway inhibitor at Page 14, Paragraph 0098 of the instant specification, is approved for the treatment of non-small cell lung cancer. At Page 1207 Hong provides that sotorasib is a small molecule that selectively targets KRAS G12C, that KRAS G12C mutations occur in 13% of NSCLC and in 1 to 3% of colocrectal cancers and other cancers. Page 1207 provides that sotorasib showed anticancer activity in patients with solid tumors harboring the KRAS G12C mutation. Ascertaining the differences between the prior art and the claims at issue (See MPEP 2141.02) The prior art does not teach an explicit embodiment where the compound 1 of the instant claims is administered in combination with a KRAS G12C inhibitor. Finding of prima facie obviousness---rationale and motivation (See MPEP 2142-2143) As US Pre-Grant publication 2016/0362406 provides the administration the compound #275 (Table 2 and example 24) for the treatment of cancers such as lung cancer, colon cancer, pancreas cancer, and melanoma, (page 27), which can have mutations such as B-RAF V600E and KRAS mutations, page 27, with additional cancer therapeutic agents, paragraph [0359] at various doses in oral administration (page 25 and paragraph [0353] and Pelaie teaches administration of tipifarnib, a KRAS, for the treatment of lung cancer. As such, it would have been prima facie obvious for a person having ordinary skill in the art to administer a combination of a compound 1 with a KRAS inhibitor, in this case tipifarnib, as both were known in the art to be efficacious in treating lung cancer. Per MPEP 244.06, I. “"It is prima facie obvious to combine two compositions each of which is taught by the prior art to be useful for the same purpose, in order to form a third composition to be used for the very same purpose.... [T]he idea of combining them flows logically from their having been individually taught in the prior art." In re Kerkhoven, 626 F.2d 846, 850, 205 USPQ 1069, 1072 (CCPA 1980) (citations omitted)”. As provided by Pelaia at Page 558, First Column, Second Paragraph, that “Carcinogenic mutations of KRas that stabilize the GTP-bound active conformation of this G-protein (thus being responsible for its constitutive activation), have been detected in about 20% of lung cancers, with relevant predominance occurring in the adenocarcinoma subtype of NSCLC.” While US Pre-Grant publication 2016/0362406 in view of Pelaia is silent regarding the specific mutations of KRAS present in the cancer cells suitable for treatment by a compound I and tipifarnib, treating cancers with these mutations will naturally flow from the method made obvious by the prior art (see above rejection), since the same compounds (a compound 1 and tipifarnib) are being administered to treat the same conditions, i.e. lung cancer. In other words, products of identical or similar composition cannot exert mutually exclusive properties when administered under the same or similar circumstances. In other words, though the prior art is silent regarding treating cancers with the specific mutations recited, by practicing the method made obvious by the prior art, administering a combination of a compound 1 and tipifarnib, one will also be treating lung cancer with the mutations recited in the claims even though the prior art was not aware of it. MPEP 2145, II. states “The fact that Applicant has recognized another advantage which would flow naturally from following the suggestion of the prior art, cannot be the basis for patentability when the differences would otherwise be obvious”. Ex parte Obiaya, 227 USPQ 58, 60. For claim 97, US Pre-Grant publication 2016/0362406 in view of Pelaia in further view of Keating (“Afatinib: A Review of Its Use in the Treatment of Advanced Non-Small Cell Lung Cancer”, Adis Drug Evaluation, 2014; hereinafter referred to as Keating), while US Pre-Grant publication 2016/0362406 does not teach further administering a third MAPK pathway inhibitor, at Page 207, under “Abstract”, Keating teaches Afatinib, recited as a suitable MAPK pathway inhibitor at Page 14, Paragraph 0098 of the instant specification, is approved for the treatment of non-small cell lung cancer. Per MPEP 2144.06, I., “"It is prima facie obvious to combine two compositions each of which is taught by the prior art to be useful for the same purpose, in order to form a third composition to be used for the very same purpose.... [T]he idea of combining them flows logically from their having been individually taught in the prior art." In re Kerkhoven, 626 F.2d 846, 850, 205 USPQ 1069, 1072 (CCPA 1980).” The same comparison can be made for US Pre-grant publication 2016/0362406 in view of Hong which provides sotorasib as a small molecule that selectively targets KRAS G12C, that KRAS G12C mutations occur in 13% of NSCLC and in 1 to 3% of colocrectal cancers and other cancers. Page 1207 provides that sotorasib showed anticancer activity in patients with solid tumors harboring the KRAS G12C mutation. Per MPEP 2144.06, I., “"It is prima facie obvious to combine two compositions each of which is taught by the prior art to be useful for the same purpose, in order to form a third composition to be used for the very same purpose.... [T]he idea of combining them flows logically from their having been individually taught in the prior art." In re Kerkhoven, 626 F.2d 846, 850, 205 USPQ 1069, 1072 (CCPA 1980).” Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to REBECCA L ANDERSON whose telephone number is (571)272-0696. The examiner can normally be reached Monday-Friday from 6am-2pm. 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, Andrew Kosar can be reached at 571-272-0913. 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. /REBECCA L ANDERSON/Primary Examiner, Art Unit 1626 ____________________ February 21, 2026 Rebecca Anderson Primary Examiner Art Unit 1626, Group 1620 Technology Center 1600
Read full office action

Prosecution Timeline

Dec 20, 2023
Application Filed
Feb 21, 2026
Non-Final Rejection — §103, §112, §DP (current)

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Prosecution Projections

1-2
Expected OA Rounds
73%
Grant Probability
97%
With Interview (+24.0%)
2y 5m
Median Time to Grant
Low
PTA Risk
Based on 1022 resolved cases by this examiner. Grant probability derived from career allow rate.

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