Prosecution Insights
Last updated: April 19, 2026
Application No. 17/761,274

COMPOSITIONS AND METHODS COMPRISING IONIZABLE LIPID NANOPARTICLES ENCAPSULATING BARCODED MRNA

Non-Final OA §103
Filed
Mar 17, 2022
Examiner
PAK, MICHAEL D
Art Unit
1674
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Cornell University
OA Round
1 (Non-Final)
58%
Grant Probability
Moderate
1-2
OA Rounds
3y 10m
To Grant
89%
With Interview

Examiner Intelligence

Grants 58% of resolved cases
58%
Career Allow Rate
405 granted / 694 resolved
-1.6% vs TC avg
Strong +31% interview lift
Without
With
+30.7%
Interview Lift
resolved cases with interview
Typical timeline
3y 10m
Avg Prosecution
24 currently pending
Career history
718
Total Applications
across all art units

Statute-Specific Performance

§101
7.5%
-32.5% vs TC avg
§103
21.6%
-18.4% vs TC avg
§102
24.4%
-15.6% vs TC avg
§112
33.7%
-6.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 694 resolved cases

Office Action

§103
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 . Election/Restrictions Applicant’s election without traverse of Group II and species in the reply filed on December 3, 2025 is acknowledged. Claims 1,4,6,8,15-22,27,29-34 are pending. Claims 2-3,5,7,9-14,23-26,28,35-36 are canceled. Claims 1, 19-22,27,29-34 are withdrawn. Claims 4,6,8,15-18 are examined. 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. Claim(s) 4,6,8,15-18 is/are rejected under 35 U.S.C. 103 as being unpatentable over Sago (J Am Chem Soc, 2018) in view of Broad (US 2019/0085324). Sago disclose composition comprising many different nanoparticles LNP types encapsulating with mRNA and barcoded DNA (page 3-4). Sago disclose different amounts of PEG mole percent and varying structure of PEG (page 5). Sago disclose universal forward and reverse primer regions on all barcodes for equal amplification which meets the limitations of a PCR handle (page 4). Sago does not disclose bar coded b-mRNA. Sago does not disclose 3’ UTR. Broad disclose barcoded b-mRNA capture microbead (para 300). Broad disclose RNA accessible for capturing by hybridization onto RNA and reverse transcription on mRNA captured on the barcoded beads (para 356). Broad disclose the 3’-UTR by preserving the 3’end of the transcript which results in the cell barcode and UMI of a given captured molecule region preserved (para 1018). Broad disclose a reporter molecule fluorescence reporter (para 886). It would have been obvious to one of ordinary skill in the art at the time of the filing to incorporate the teaching and disclosure of Broad b-mRNA for the barcoded DNA of Sago. One of ordinary skill in the art would be motivated to combine teachings because Broad provides the similar nucleic acid of RNA in the lipid nanoparticle formulation. No claims are allowed. Any inquiry concerning this communication or earlier communications from the examiner should be directed to MICHAEL D PAK whose telephone number is (571)272-0879. The examiner can normally be reached on flexible time. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Vanessa Ford can be reached on 571-272-0857. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of an application may be obtained from the Patent Application Information Retrieval (PAIR) system. Status information for published applications may be obtained from either Private PAIR or Public PAIR. Status information for unpublished applications is available through Private PAIR only. For more information about the PAIR system, see http://pair-direct.uspto.gov. Should you have questions on access to the Private PAIR system, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative or access to the automated information system, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /MICHAEL D PAK/Primary Examiner, Art Unit 1674
Read full office action

Prosecution Timeline

Mar 17, 2022
Application Filed
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

1-2
Expected OA Rounds
58%
Grant Probability
89%
With Interview (+30.7%)
3y 10m
Median Time to Grant
Low
PTA Risk
Based on 694 resolved cases by this examiner. Grant probability derived from career allow rate.

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