Prosecution Insights
Last updated: April 19, 2026
Application No. 15/931,944

ADMINISTRATION OF DEUTERATED CFTR POTENTIATORS

Non-Final OA §103
Filed
May 14, 2020
Examiner
SOROUSH, LAYLA
Art Unit
1622
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Vertex Pharmaceuticals (Europe) Limited
OA Round
6 (Non-Final)
40%
Grant Probability
Moderate
6-7
OA Rounds
3y 10m
To Grant
83%
With Interview

Examiner Intelligence

Grants 40% of resolved cases
40%
Career Allow Rate
349 granted / 868 resolved
-19.8% vs TC avg
Strong +43% interview lift
Without
With
+43.0%
Interview Lift
resolved cases with interview
Typical timeline
3y 10m
Avg Prosecution
53 currently pending
Career history
921
Total Applications
across all art units

Statute-Specific Performance

§101
0.6%
-39.4% vs TC avg
§103
50.3%
+10.3% vs TC avg
§102
12.5%
-27.5% vs TC avg
§112
12.9%
-27.1% vs TC avg
Black line = Tech Center average estimate • Based on career data from 868 resolved cases

Office Action

§103
DETAILED ACTION A request for continued examination under 37 CFR 1.114, including the fee set forth in 37 CFR 1.17(e), was filed in this application after final rejection. Since this application is eligible for continued examination under 37 CFR 1.114, and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114. Applicant's submission filed on December 17, 2025 has been entered. Claims 1, 5-8, 10-13 are pending. The claims corresponding to the elected subject matter are claims 1, 5-7 and are herein acted on the merits. 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 . Application Priority This application filed 05/14/2020 is a continuation 15/761,532, Filing Date: 03/20/2018 which is a 371 of PCT/US2016/052922 filed 09/21/2016, and claims priority to provisional 62/348,855, filed 06/10/2016, PRO 62/238,511 filed 10/07/2015 and PRO 62/221,531 filed 09/21/2015. Response to Arguments Applicant's arguments over the 35 U.S.C. 103(a) rejection of claims 1-2, 4-7 over Morgan (WO 2012158885) is not persuasive. Therefore, the rejection is herewith maintained. Applicant argues a PTAB decision regarding amounts and an obviousness type rejection. Further, Applicant argues “to establish a once-daily dosing regimen for Compound (I) with a reasonable expectation of success, a person of ordinary skill in the art would need to rely on human pharmacokinetic data (such as Tmax, Cmax, AUC, and T1/2), which Morgan does not provide. It was not until Applicant obtained human clinical trial data that a 150 mg once-daily dosing regimen for Compound (I) could be reliably established, consistent with the data described in Applicant's specification.” Lastly, applicant states: The FDA approval further supports the fact that the claimed dosage and regimen of Compound (I) is unexpectedly superior to the several ranges disclosed of Morgan, and, accordingly, the non-obviousness of Applicant's claims. The Examiner will not respond to arguments to a PTAB decision made on an unrelated case, with a different claim set. Each application is determined on its own record of prior art and evidence. An unrelated case will not share the same record, claims, or arguments. Further, with respect to the PK parameters, the discovery of a previously unappreciated property of a known drug does not make that composition patentably novel. Finally, the Examiner states Applicant has not provided any surprising or unexpected data with respect to the specific compound or amount generally taught by Morgan. Applicant solely states the amount is approved by the FDA and is therefore unexpectedly superior to the several ranges disclosed. However, a side-by-side comparison of the claims with a range outside of those claimed, having unexpected properties would be appropriate. The arguments do not overcome the 35 U.S.C. § 103 rejection over Morgan (WO 2012158885). The rejections are maintained, for the reasons on record. The following rejections are made: 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 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. Claims 1-2, 4-7 are rejected under 35 U.S.C. 103 as being unpatentable over Morgan (WO 2012158885). The claims are examined to the extent that they read on a method of treating a condition that is mediated by CFTR in a subject comprising administering to the subject an amount in the range of 150 mg to 200 mg, once per day, of a compound represented by the following structural formula 1. PNG media_image1.png 183 365 media_image1.png Greyscale Morgan teaches the compound PNG media_image2.png 306 586 media_image2.png Greyscale and pharmaceutically acceptable salts thereof. The reference teaches compositions comprising a compound 106 of this invention and the use of such compositions in methods of treating diseases and conditions that are beneficially treated by administering a CFTR potentiators (see abstract). The compound 106 taught in the prior art is identical to that claimed and the “natural isotopic abundance” is property of a known drug. In one embodiment, an effective amount of a compound of this invention can range from about 0.02 to 2500 mg per treatment. In more specific embodiments the range is from about 0.2 to 1250 mg or from about 0.4 to 500 mg or most specifically from 2 to 250 mg per treatment. Treatment typically is administered one to two times daily (para [74]). In one embodiment the subject is a patient in need of such treatment. Such diseases include cystic fibrosis, Hereditary emphysema, etc (para [79]). In certain embodiments, the compound is administered orally. Compositions of the present invention suitable for oral administration may be presented as discrete units such as capsules, sachets, or tablets each containing a predetermined amount of the active ingredient; a powder or granules; a solution or a suspension in an aqueous liquid or a non-aqueous liquid; an oil-in-water liquid emulsion; a water-in-oil liquid emulsion; packed in liposomes; or as a bolus, etc. (para [58]). The reference fails to specific amount 150 mg of compound I. It would have been obvious to one of ordinary skill in the art at the time of the invention to use 150 mg of the active. The motivation to use 150 mg of the active is because Morgan teaches that most specifically 2 to 250 mg of the active is effective for treatment. Hence a skilled artisan would have had reasonable expectation of success in the claimed amount, as taught in the prior art. Conclusion No claims allowed. Any inquiry concerning this communication or earlier communications from the examiner should be directed to LAYLA SOROUSH whose telephone number is (571)272-5008. The examiner can normally be reached on Monday thru Friday; 8:30 AM to 5:00 PM PST. 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 Henry Alstrum-Acevedo, can be reached on (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. /LAYLA SOROUSH/ Primary Examiner, Art Unit 1622
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Prosecution Timeline

May 14, 2020
Application Filed
Jun 05, 2021
Non-Final Rejection — §103
Sep 10, 2021
Response Filed
Sep 30, 2021
Final Rejection — §103
Apr 05, 2022
Notice of Allowance
Nov 04, 2022
Request for Continued Examination
Nov 09, 2022
Response after Non-Final Action
Dec 16, 2022
Non-Final Rejection — §103
Apr 21, 2023
Notice of Allowance
Apr 21, 2023
Response after Non-Final Action
May 08, 2023
Response after Non-Final Action
Nov 20, 2023
Response after Non-Final Action
Nov 30, 2023
Response after Non-Final Action
Dec 15, 2023
Response after Non-Final Action
Feb 27, 2024
Request for Continued Examination
Aug 29, 2024
Response after Non-Final Action
Sep 07, 2024
Non-Final Rejection — §103
Mar 10, 2025
Response Filed
Jun 14, 2025
Final Rejection — §103
Nov 03, 2025
Interview Requested
Nov 20, 2025
Applicant Interview (Telephonic)
Dec 04, 2025
Response after Non-Final Action
Dec 17, 2025
Request for Continued Examination
Dec 22, 2025
Response after Non-Final Action
Jan 10, 2026
Non-Final Rejection — §103 (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

6-7
Expected OA Rounds
40%
Grant Probability
83%
With Interview (+43.0%)
3y 10m
Median Time to Grant
High
PTA Risk
Based on 868 resolved cases by this examiner. Grant probability derived from career allow rate.

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