Prosecution Insights
Last updated: July 17, 2026
Application No. 17/996,379

LIPOSOMAL COMPOSITION FOR PREVENTING OR EARLY TREATMENT OF PATHOGENIC INFECTION

Non-Final OA §103§112
Filed
Oct 17, 2022
Priority
Apr 15, 2020 — EU 20169618.4 +2 more
Examiner
BROWE, DAVID
Art Unit
1617
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Statens Serum Institut
OA Round
3 (Non-Final)
26%
Grant Probability
At Risk
3-4
OA Rounds
1m
Est. Remaining
54%
With Interview

Examiner Intelligence

Grants only 26% of cases
26%
Career Allowance Rate
189 granted / 726 resolved
-34.0% vs TC avg
Strong +28% interview lift
Without
With
+27.6%
Interview Lift
resolved cases with interview
Typical timeline
3y 11m
Avg Prosecution
47 currently pending
Career history
794
Total Applications
across all art units

Statute-Specific Performance

§101
0.5%
-39.5% vs TC avg
§103
84.9%
+44.9% vs TC avg
§102
8.2%
-31.8% vs TC avg
§112
4.6%
-35.4% vs TC avg
Black line = Tech Center average estimate • Based on career data from 726 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 . DETAILED ACTION Continued Examination Under 37 CFR 1.114 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and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114.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 Request for Continued Examination (RCE) filed on June 8, 2026, with the submission filed on May 11, 2026, which includes a response to the Final Office Action mailed December 9, 2025, has been entered. Claims 2, 15, 17, 29, and 36 have been amended; claims 1, 3, 5, 7, 9, 13, 14, 16, 22, 23, 25, 27, and 30-33 have been canceled; and claim 39 has been newly added. Claims 6, 8, 10-12, 18-20, 34, 35, 37, and 38 have been withdrawn. Claims 2, 4, 15, 17, 21, 24, 26, 28, 29, 36, and 39 are under examination. Withdrawal of Prior Claim Rejections - 35 USC § 103 Applicant’s arguments are found sufficiently persuasive, and Applicant is being given the benefit of the doubt as to whether cationic liposomes would be reasonably expected to treat a respiratory tract infection. Therefore, the 35 USC 103 rejection presented in the Final Office Action mailed December 9, 2025 is hereby withdrawn. Claim Objections Claim 2 is objected to because of the following: i). Claim 2, as now amended, stipulates that the liposome contains “at least one immunomodulator selected from a STING agonist”. The expression “at least one immunomodulator selected from a STING agonist” is awkward and appears to be in improper English grammatical form. The term “a STING agonist” appears to refer to one STING agonist. However, the expression “at least one immunomodulator” refers to one or more, and “is selected from” implies more than one option. To remedy this, Applicant is advised to amend the expression to e.g. “and one or more STING agonists”. ii) In claim 2, there should be a semicolon rather than a comma between “STING agonist” and “wherein”. Appropriate correction is required. Claim Rejections - 35 USC § 112(a) 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. Claim 39 is rejected under 35 U.S.C. 112(a) or 35 U.S.C. 112 (pre-AIA ), first paragraph, as failing to comply with the written description requirement. The claim(s) contains subject matter which was not described in the specification in such a way as to reasonably convey to one skilled in the relevant art that the inventor or a joint inventor, or for applications subject to pre-AIA 35 U.S.C. 112, the inventor(s), at the time the application was filed, had possession of the claimed invention. Claim 39 stipulates in a wherein clause that “the STING agonist is…poly(I:C)”. However, in the previous claim set, claim 2 stipulated that the liposome contained at least one immunomodulator selected from poly(I:C) and a STING agonist. Clearly, in the method previously presented, “poly(I:C)” and “a STING agonist” were two distinct elements. The original specification discloses “the liposomal composition may also comprise an immunomodulator, preferably poly (I:C) and more preferably STING agonists, such as cAMP, cGMP, c-di-AMP or c-di-GMP” (see paragraph 0011). Paragraph [0091] discloses “the immunomodulator may be selected from the group consisting of STING agonists such as cyclic-GMP-AMP (cGAMP), cAMP, c-di-AMP, cGMP and c-di-GMP”, and paragraph [0092] discloses “the immunomodulator is preferably a STING agonist selected from the group consisting of cGAMP, cAMP, cGMP, c-di-AMP and c-di-GMP, more preferably c-di-GMP”. Hence, while Applicant has support in the original specification and claims for the immunomodulator being either poly(I:C) or a STING agonist, Applicant does not have adequate support for poly(I:C) being a STING agonist. This constitutes new matter. Claim Rejections - 35 USC § 112(b) 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 2, 4, 15, 17, 21, 24, 26, 28, 29, 36, and 39 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 2, as now amended, stipulates that the liposome contains “at least one immunomodulator selected from a STING agonist”. The term “a STING agonist” appears to refer to one STING agonist. However, the expression “at least one immunomodulator” refers to one or more, and “is selected from” implies more than one option. Hence, one of ordinary skill in the art cannot definitively ascertain the metes and bounds of the claimed subject matter, in particular whether the liposome requires one or more STING agonist, or is limited to merely one STING agonist. Claim 26 stipulates that the method treats “the early infection of the respiratory tract”. One of ordinary skill in the art cannot definitively ascertain the metes and bounds of “the early infection”, and what duration or stage of an infection is “early” vs. “not early”. For example, if the infection has persisted for 1 day at the time treatment is commenced, does this constitute treating “the early infection”, or not? What if administration commences after the infection has persisted for 10 hours? How about 36 hours? Claim 29, as now amended, stipulates in a wherein clause that the subject is “a mammal” or is selected from the group consisting of those recited, all of which are mammals. The claim thus recites a broad limitation, together with a narrower limitation that falls within the purview of the broad limitation, in the alternative in the same claim, which is indefinite. Claim 39, which depends from claim 2, stipulates in a wherein clause that “the STING agonist is…poly(I:C)”. In the previous claim set, claim 2 stipulated that the liposome contained at least one immunomodulator selected from poly(I:C) and a STING agonist. Clearly, in the method previously claimed, “poly(I:C)” and “a STING agonist” were two distinct elements. In claim 39, however, poly(I:C) is a STING agonist. One of ordinary skill in the art thus cannot definitively ascertain the metes and bounds of the claimed subject matter. Claims 4, 15, 17, 21, 24, 26, 28, 29, 36, and 39 are (also) indefinite for depending from an indefinite claim. Conclusion No claims are allowed. Inquiries Any inquiry concerning this communication or earlier communications from the examiner should be directed to DAVID BROWE whose telephone number is (571)270-1320. The examiner can normally be reached Monday - Friday, 9:30 AM to 6 PM EST. 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. /DAVID BROWE/Primary Examiner, Art Unit 1617
Read full office action

Prosecution Timeline

Oct 17, 2022
Application Filed
Jul 15, 2025
Non-Final Rejection mailed — §103, §112
Nov 17, 2025
Response Filed
Dec 09, 2025
Final Rejection mailed — §103, §112
May 11, 2026
Response after Non-Final Action
Jun 08, 2026
Request for Continued Examination
Jun 09, 2026
Response after Non-Final Action
Jun 17, 2026
Non-Final Rejection mailed — §103, §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12655171
COMPOUNDS FOR ACTIVATING INVARIANT NATURAL KILLER T-CELLS AND METHODS OF USE IN ELIMINATING INFLAMMATORY SENESCENT CELLS
2y 1m to grant Granted Jun 16, 2026
Patent 12622903
DRUG PRODUCTS FOR INTRANASAL ADMINISTRATION AND USES THEREOF
2y 2m to grant Granted May 12, 2026
Patent 12616650
RADIATION SENSITIZER OF ANTI-CANCER CHEMOTHERAPY SENSITIZER
5y 9m to grant Granted May 05, 2026
Patent 12616716
WOUND HEALING DRESSINGS AND FORMULATIONS AND METHODS OF USE THEREOF
1y 4m to grant Granted May 05, 2026
Patent 12569419
ANTIMICROBIAL COMPOSITION
2y 10m to grant Granted Mar 10, 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

3-4
Expected OA Rounds
26%
Grant Probability
54%
With Interview (+27.6%)
3y 11m (~1m remaining)
Median Time to Grant
High
PTA Risk
Based on 726 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