Prosecution Insights
Last updated: October 04, 2026
Application No. 18/823,760

NOVEL FORMULATION AND TREATMENT METHODS

Non-Final OA §101§DP
Filed
Sep 04, 2024
Priority
Sep 29, 2015 — AU 2015903951 +4 more
Examiner
FAY, ZOHREH ALEMZADEH
Art Unit
1617
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Prodrugxtend Pty Ltd.
OA Round
2 (Non-Final)
52%
Grant Probability
Moderate
2-3
OA Rounds
1y 2m
Est. Remaining
46%
With Interview

Examiner Intelligence

Grants 52% of resolved cases
52%
Career Allowance Rate
588 granted / 1127 resolved
-7.8% vs TC avg
Minimal -6% lift
Without
With
+-6.2%
Interview Lift
resolved cases with interview
Typical timeline
3y 3m
Avg Prosecution
46 currently pending
Career history
1186
Total Applications
across all art units

Statute-Specific Performance

§101
3.0%
-37.0% vs TC avg
§103
51.8%
+11.8% vs TC avg
§102
10.6%
-29.4% vs TC avg
§112
20.5%
-19.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1127 resolved cases

Office Action

§101 §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 . Claims 1-18 are presented for examination. The remarks filed on 05/21/2026 have been received and entered. Double Patenting A rejection based on double patenting of the “same invention” type finds its support in the language of 35 U.S.C. 101 which states that “whoever invents or discovers any new and useful process... may obtain a patent therefor...” (Emphasis added). Thus, the term “same invention,” in this context, means an invention drawn to identical subject matter. See Miller v. Eagle Mfg. Co., 151 U.S. 186 (1894); In re Vogel, 422 F.2d 438, 164 USPQ 619 (CCPA 1970); In re Ockert, 245 F.2d 467, 114 USPQ 330 (CCPA 1957). A statutory type (35 U.S.C. 101) double patenting rejection can be overcome by canceling or amending the claims that are directed to the same invention so they are no longer coextensive in scope. The filing of a terminal disclaimer cannot overcome a double patenting rejection based upon 35 U.S.C. 101. Claims 1-7 and 8-18 is/are rejected under 35 U.S.C. 101 as claiming the same invention as that of claims 1-16 of prior U.S. Patent No. 11077112. This is a statutory double patenting rejection. The claims of the instant application and the US Patent are drawn to a composition of 6-Thioguanine and a homogeneous erodible hydrophilic polymer. The function of the same composition is the inherent property of such compositions. Applicant’s attention is drawn to In re Spada, 911 F.2d 705, 709, 15 USPQ2d 1655, 1658 (Fed. Cir. 1990), where the court states “"Products of identical chemical composition cannot have mutually exclusive properties”. A chemical composition and its properties are inseparable. Therefore, the composition of the U.S. Patent is capable of doing the function of the instant application. 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. Claims 1-18 are rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1-16 of U.S. Patent No. 11/077,112 in view of Florin et al. (US 20180235972). The claims of the instant application do not specifically teach a PH, a dosage form and a microparticulate dosage form. It would have been obvious to release 6TG at specific pH, considering that Florin teaches the release rate of 6-TG at the pH of 6-7.5. See Para [0061]. The concentration of 6-TG is taught in Para [0041]. The composition being in a microparticulate form is taught in Para [0115]. Any inquiry concerning this communication or earlier communications from the examiner should be directed to ZOHREH A FAY whose telephone number is (703)756-1800. The examiner can normally be reached Monday-Friday 9:30AM-6:00. 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, Sue Liu can be reached at 571-272-5539. 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. /ZOHREH A FAY/Primary Examiner, Art Unit 1617
Read full office action

Prosecution Timeline

Sep 04, 2024
Application Filed
Jan 27, 2026
Non-Final Rejection mailed — §101, §DP
May 21, 2026
Response Filed
May 21, 2026
Response after Non-Final Action
Sep 01, 2026
Non-Final Rejection mailed — §101, §DP (current)

Precedent Cases

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Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

2-3
Expected OA Rounds
52%
Grant Probability
46%
With Interview (-6.2%)
3y 3m (~1y 2m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 1127 resolved cases by this examiner. Grant probability derived from career allowance rate.

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