Prosecution Insights
Last updated: July 31, 2026
Application No. 18/839,921

DATA EXCHANGE ATTESTATION METHOD

Non-Final OA §112
Filed
Aug 20, 2024
Priority
Feb 22, 2022 — GB 2202348.5 +1 more
Examiner
SONG, HOSUK
Art Unit
2435
Tech Center
2400 — Computer Networks
Assignee
Nchain Licensing AG
OA Round
1 (Non-Final)
95%
Grant Probability
Favorable
1-2
OA Rounds
3m
Est. Remaining
98%
With Interview

Examiner Intelligence

Grants 95% — above average
95%
Career Allowance Rate
1459 granted / 1540 resolved
+36.7% vs TC avg
Minimal +3% lift
Without
With
+2.8%
Interview Lift
resolved cases with interview
Typical timeline
2y 2m
Avg Prosecution
18 currently pending
Career history
1558
Total Applications
across all art units

Statute-Specific Performance

§101
18.2%
-21.8% vs TC avg
§103
8.0%
-32.0% vs TC avg
§102
36.7%
-3.3% vs TC avg
§112
12.8%
-27.2% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1540 resolved cases

Office Action

§112
DETAILED ACTION 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 Claims 1-26 are pending in this application. Information Disclosure Statement The Information Disclosure Statement(s) submitted by applicant on 8/20/2024 have been considered. The submission is in compliance with the provisions of 37 CFR 1.97. Form PTO-1449 signed and attached hereto. Claim Rejections - 35 USC § 112 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 1-20 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. Claims 1,15,25,26 recites the limitation “wherein the respective attestation transaction comprises a respective output locked to a respective Merkle root of a respective Merkle tree”. The term “locked to” renders the claim indefinite under 35 U.S.C. 112(b) because of the invention cannot be reasonably ascertained. The claim does not identify what system or mechanism performs the “locking” and “locked to” has no clear, accepted meaning outside of specific blockchain context. Without defining whether this means cryptographically bound, access control or otherwise, a person of ordinary skill in the art cannot determine the scope of the claim. Claims 2-14,16-19, dependent on one of claims 1,15, follow therewith. USPTO Contact Information Any inquiry concerning this communication or earlier communications from the examiner should be directed to HOSUK SONG whose telephone number is (571)272-3857. The examiner can normally be reached Mon-Fri: 7:30AM-5:00PM. 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, Joseph Hirl can be reached at 571-272-3685. 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. /HOSUK SONG/ Primary Examiner, Art Unit 2435
Read full office action

Prosecution Timeline

Aug 20, 2024
Application Filed
Nov 07, 2025
Non-Final Rejection mailed — §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12694079
HARDWARE ACCELERATOR AND METHOD OF OPERATING A HARDWARE ACCELERATOR
2y 5m to grant Granted Jul 28, 2026
Patent 12694080
CONTENT TRACKING SYSTEM AND METHOD
2y 3m to grant Granted Jul 28, 2026
Patent 12695600
INFORMATION PROCESSING APPARATUS, INFORMATION PROCESSING METHOD, AND RECORDING MEDIUM
1y 10m to grant Granted Jul 28, 2026
Patent 12696089
WIRELESS NETWORK SLICE ACCESS BASED ON ENCRYPTED SLICE CERTIFICATES THAT INDICATE SLICE CHARACTERISTICS
2y 0m to grant Granted Jul 28, 2026
Patent 12682222
AUTOMATIC CORRELATION OF TEST LOGS WITH SERVICE TICKET
2y 11m to grant Granted Jul 14, 2026
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
95%
Grant Probability
98%
With Interview (+2.8%)
2y 2m (~3m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1540 resolved cases by this examiner. Grant probability derived from career allowance rate.

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