Prosecution Insights
Last updated: October 02, 2026
Application No. 18/850,485

SOLID FORMS OF TYK2 INHIBITORS AND METHODS OF USE

Non-Final OA §103§112
Filed
Sep 24, 2024
Priority
Mar 25, 2022 — provisional 63/269,944 +1 more
Examiner
MARTIN, KEVIN STEPHEN
Art Unit
Tech Center
Assignee
Takeda Pharmaceutical Company Limited
OA Round
1 (Non-Final)
77%
Grant Probability
Favorable
1-2
OA Rounds
1y 5m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 77% — above average
77%
Career Allowance Rate
122 granted / 158 resolved
+17.2% vs TC avg
Strong +23% interview lift
Without
With
+23.2%
Interview Lift
resolved cases with interview
Typical timeline
3y 5m
Avg Prosecution
59 currently pending
Career history
184
Total Applications
across all art units

Statute-Specific Performance

§101
1.3%
-38.7% vs TC avg
§103
24.3%
-15.7% vs TC avg
§102
16.1%
-23.9% vs TC avg
§112
41.5%
+1.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 158 resolved cases

Office Action

§103 §112
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 of Claims The amendments to the claims filed July 25, 2025 are acknowledged and entered. Claims 1, 4-5, 8-9, 12-17, 20, 24-25, 28-29, 32, 34 and 36-37 are pending. Priority This application is a 371 of PCT/US2023/064916, filed March 24, 2023, which claims benefit of 63/269,944, filed March 25, 2022. Information Disclosure Statement Acknowledgement is made of the Information Disclosure Statements filed on July 25, 2025 and August 26, 2026. All references have been considered except where marked with a strikethrough. Specification The specification has not been checked to the extent necessary to determine the presence of all possible minor errors. Applicant’s cooperation is requested in correcting any of the errors of which applicant may become aware of in the specification. Claim Rejections - 35 USC § 112b The following is a quotation of 35 U.S.C. 112(b): (b) CONCLUSION.—The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the inventor or a joint inventor regards as the invention. The following is a quotation of 35 U.S.C. 112 (pre-AIA ), second paragraph: The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the applicant regards as his invention. Claims 1, 4-5, 8-9, 12-17, 20, 24-25, 28-29, 32, 34 and 36-37 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. The claims are indefinite for the reasons that follow: Claims 1, 17 and 37 recite the limitations “Form C”, “Form A”, “Form B”, “Form D”, “Form E”, “Form F”, “Form G”, “Form H”, “Form I”, and/or “Form J”. These limitations are indefinite because they have not been defined in the specification. For instance, the specification provides no definition of “Form C” and therefore the metes and bounds of “Form C” is unclear. Claims 4-5, 8-9, 12-16, 20, 24-25, 29 , 32, 34 and 36 depend from claims 1 or 17, respectively, include the limitations “Form C” or “Form A” and are also indefinite. Claims 1 and 17 recite the limitation “substantially free of amorphous Compound 1”. This limitation renders the scope of the claim indefinite because the specification fails to provide a clear definition of the limitation. Paragraph [00355] of the specification teaches "substantially free of amorphous Compound 1" means that the compound contains no significant amount of amorphous Compound 1; however, a person skilled in the art has no way of knowing what Applicant regards as a “significant amount”. “Substantially free of amorphous Compound 1” is ambiguous. Claims 4-5, 8-9, 12-16, 20, 24-25, 29 , 32, 34 and 36 depend from claims 1 or 17, respectively, include the limitation “substantially free of Compound 1” and are also indefinite. Claims 12, 15-16, 28, 32 and 36 similarly recite the phrases “substantially similar” or “substantially as shown” which render the claims indefinite because “substantially” is not defined and therefore a person skilled in the art has no way of knowing what Applicant intends by, for instance, an XRPD that is substantially similar to Fig. 10 or Fig. 16 (see claim 12). A broad range or limitation together with a narrow range or limitation that falls within the broad range or limitation (in the same claim) 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, claims 4, 5 and 12 recite the broad recitation “Figure 16”, and the claim also recites “(bottom trace)” which is the narrower statement of the range/limitation. Claims 9 and 12 recite the broad recitation “Figure 10”, and the claim also recites “(top trace)” which is the narrower statement of the range/limitation. Claims 24-25 and 28 recite the broad recitation “Figure 4”, and the claim also recites “(bottom trace)” which is the narrower statement of the range/limitation. The claim(s) are considered indefinite because there is a question or doubt as to whether the feature introduced by such narrower language is (a) merely exemplary of the remainder of the claim, and therefore not required, or (b) a required feature of the claims. Claim 20 recites the limitations “hydrate, monohydrate, dihydrate, or trihydrate" in line 2. There is insufficient antecedent basis for these limitations in the claim because claim 20 depends from claim 17 which does not recite that the solid form of Compound 1 can be a hydrate. Claim Rejections - 35 USC § 112d The following is a quotation of 35 U.S.C. 112(d): (d) REFERENCE IN DEPENDENT FORMS.—Subject to subsection (e), a claim in dependent form shall contain a reference to a claim previously set forth and then specify a further limitation of the subject matter claimed. A claim in dependent form shall be construed to incorporate by reference all the limitations of the claim to which it refers. The following is a quotation of pre-AIA 35 U.S.C. 112, fourth paragraph: Subject to the following paragraph [i.e., the fifth paragraph of pre-AIA 35 U.S.C. 112], a claim in dependent form shall contain a reference to a claim previously set forth and then specify a further limitation of the subject matter claimed. A claim in dependent form shall be construed to incorporate by reference all the limitations of the claim to which it refers. Claims 5, 9, 25 and 29 are rejected under 35 U.S.C. 112(d) or pre-AIA 35 U.S.C. 112, 4th paragraph, as being of improper dependent form for failing to further limit the subject matter of the claim upon which it depends, or for failing to include all the limitations of the claim upon which it depends. Claims 5, 9, 25 and 29 are substantial duplicates of claim 4, 8 and 24. The claims respectively depend from claims 4, 8 and 24 and recite further characterized by having additional XRPD peaks. One skilled in the art would understand that these claims are doing no more than reciting additional peaks which are properties that are inherent the crystalline forms recited in claim 4, 8 or 24. Thus, claims 5, 9, 25 and 29 are not teaching a new or different crystalline form of claims 4, 8 or 24, rather they just adding additional peaks which only adds more detail to the claim. The crystalline forms which are present in claim 5, 9, 25 and 29 are identical to the crystalline forms in dependent claims 4, 8 and 24. The claims are thus rejected for failing to further limit the subject matter of the claim upon which they depend. Applicant may cancel the claim(s), amend the claim(s) to place the claim(s) in proper dependent form, rewrite the claim(s) in independent form, or present a sufficient showing that the dependent claim(s) complies with the statutory requirements. Claim Rejections - 35 USC § 103 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. Claim(s) 1, 17 and 37 are rejected under 35 U.S.C. 103 as being unpatentable over Masse et al. ( WO2019/023468 A1)(hereinafter “Masse”). The instant claims are drawn to a solid form of Compound 1 wherein the form is Form A, Form B, Form C, Form D, Form E, Form F, Form G, Form H, Form I or Form J. The claims do not require that the specific solid forms (e.g. Form A, Form B…) have any distinguishing features. Form A, Form B, Form C, Form D, Form E, Form F, Form G, Form H, Form I and Form J do not provide any structural limitation and therefore the scope of the claims is regarded as solid form of Compound 1. Masse teaches Compound 1 of the claims (page 272, compound I-908; pictured below for convenience). Masse does not explicitly recite a solid form of the compound as required by the claims; however, Masse teaches that compounds of the invention may be provided in crystalline (i.e. solid) form in order to prolong the effect of a compound of the invention (see [00230]). Masse does not recite the specific forms of the claims (e.g. Form C); but, as noted above, these forms do not provide any further structure limitation to the claimed compound. A crystalline solid form of Masse is therefore regarded as meeting these limitations. PNG media_image1.png 252 766 media_image1.png Greyscale The difference between the prior art and the instant claims is that the instant claims require a solid form of Compound 1; however, the claimed invention would have been prima facie obvious to one having ordinary skill in the art before the effective filing date of the instant application because Masse had disclosed that the claimed compound could be in a crystalline solid form. One would have been motivated to obtain the claimed invention because Masse disclosed the compound could be provided in crystalline form in order to prolong the effect of the compound. One would have had a reasonable expectation of success because Masse taught that the claimed compound could be provided in a solid form as required by the claims. Allowable Subject Matter Claims 4, 8, 12-16, 20, 24, 28, 32, 34 and 36 would be allowable if rewritten to overcome the rejection(s) under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), 2nd paragraph, set forth in this Office action and to include all of the limitations of the base claim and any intervening claims. The following is a statement of reasons for the indication of allowable subject matter: The closest reference to the instant claims is Masse et al. (WO2019/023468 A1) which was discussed in the rejection herein. Masse does not teach the limitations of claims 4, 9, 12-16, 20, 24, 28-29, 32, 34 and 36. There is no teaching which would have motivated one of ordinary skill in the art before the effective filing date of the instant applicant to modify Masse into the claimed invention with any reasonable expectation of success. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to KEVIN MARTIN whose telephone number is (571)270-0917. The examiner can normally be reached Monday - Friday 8 am - 5 pm. Examiner interviews are available via telephone, in-person, and video conferencing using a USPTO supplied web-based collaboration tool. To schedule an interview, applicant is encouraged to use the USPTO Automated Interview Request (AIR) at http://www.uspto.gov/interviewpractice. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Jeffrey Murray can be reached on (571) 272-9023. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of published or unpublished applications may be obtained from Patent Center. Unpublished application information in Patent Center is available to registered users. To file and manage patent submissions in Patent Center, visit: https://patentcenter.uspto.gov. Visit https://www.uspto.gov/patents/apply/patent-center for more information about Patent Center and https://www.uspto.gov/patents/docx for information about filing in DOCX format. For additional questions, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. September 9, 2026 /K.S.M./Examiner, Art Unit 1624 /BRUCK KIFLE/Primary Examiner, Art Unit 1624
Read full office action

Prosecution Timeline

Sep 24, 2024
Application Filed
Sep 15, 2026
Non-Final Rejection mailed — §103, §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12746239
COMPOSITIONS AND METHODS COMPRISING ENDOTHELIN A RECEPTOR ANTAGONISTS AND ANDROGEN THERAPIES
4y 10m to grant Granted Sep 29, 2026
Patent 12747214
IMIDAZOLE-BASED SYNTHETIC LIPIDOIDS FOR IN VIVO MRNA DELIVERY INTO IMMUNE CELLS
4y 0m to grant Granted Sep 29, 2026
Patent 12746241
SOLID PHARMACEUTICAL PREPARATION, PREPARATION METHOD THEREFOR AND USE THEREOF
3y 11m to grant Granted Sep 29, 2026
Patent 12746222
IMPLANTABLE DEPOTS FOR LOCALIZED, SUSTAINED, CONTROLLED RELEASE OF THERAPEUTIC AGENTS TO TREAT CANCER AND RELATED CONDITIONS
3y 5m to grant Granted Sep 29, 2026
Patent 12740981
COMPOSITIONS AND METHODS FOR TREATING CANCER
4y 9m to grant Granted Sep 22, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

Strategy Recommendation AI-generated — please review before filing

Get a prosecution strategy drawn from examiner precedents, rejection analysis, and claim mapping.
Typically takes 5-10 seconds — AI-generated, attorney review required before filing

Prosecution Projections

1-2
Expected OA Rounds
77%
Grant Probability
99%
With Interview (+23.2%)
3y 5m (~1y 5m remaining)
Median Time to Grant
Low
PTA Risk
Based on 158 resolved cases by this examiner. Grant probability derived from career allowance rate.

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month