Prosecution Insights
Last updated: October 04, 2026
Application No. 19/087,281

SELECTION OF CRYPTOGRAPHIC IDENTIFIERS IN A BLOCK

Final Rejection §DOUBLEPATENT
Filed
Mar 21, 2025
Priority
Jul 28, 2020 — continuation of 16/941,380 +2 more
Examiner
LEE, CLAY C
Art Unit
3699
Tech Center
3600 — Transportation & Electronic Commerce
Assignee
Dmg Blockchain Solutions Inc.
OA Round
2 (Final)
55%
Grant Probability
Moderate
3-4
OA Rounds
1y 10m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 55% of resolved cases
55%
Career Allowance Rate
133 granted / 243 resolved
+2.7% vs TC avg
Strong +58% interview lift
Without
With
+57.5%
Interview Lift
resolved cases with interview
Typical timeline
3y 4m
Avg Prosecution
32 currently pending
Career history
279
Total Applications
across all art units

Statute-Specific Performance

§101
30.6%
-9.4% vs TC avg
§103
47.3%
+7.3% vs TC avg
§102
8.0%
-32.0% vs TC avg
§112
12.0%
-28.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 243 resolved cases

Office Action

§DOUBLEPATENT
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 . Response to Amendment The amendment filed May 11, 2026 has been entered. Claims 1-20 remain pending in the application. Applicant’s amendments to the Claims have overcome each and every 101, 102, and 103 rejections previously set forth in the Non-Final Office Action mailed February 18, 2026. 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 1-20 are rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1-20 of U.S. Patent No. 12,315,009. Although the claims at issue are not identical, they are not patentably distinct from each other because it recites the additional features of based on said determining, sorting, by the pool of hashing processors, the plurality of events based on each respective cryptographic identifier associated with each respective event of the plurality of events; based on said sorting, determining, by the pool of hashing processors, events of the plurality of events to include in a subset of the plurality of events, wherein those events associated with a predetermined list of cryptographic identifiers are selectively excluded from the subset; determining, by the pool of hashing processors, an association of events in the mempool with the predetermined list of cryptographic identifiers; and propagating, by the pool of hashing processors, the block data structure including the subset within the mempool. Since U.S. Patent No. 12,315,009 and the claims at issue of the present application perform similar functions, it would have been obvious to a person of ordinary skill in the art to modify claims 1-20 of U.S. Patent No. 12,315,009 by removing the additional features. It is well settled that omission of an element and its function is an obvious expedient if the remaining elements perform the same function as before. In re Karison, 136 USPQ 184 (CCPA 1963) Also note Ex parte Rainu, 168 USPQ 375 (Bd. App. 1969). Thus, omission of a reference element whose function is not needed would be obvious to one of ordinary skill in the art. Allowable Subject Matter Claim(s) 1-20 would be allowable if rewritten or amended overcome the rejection(s) under Double Patenting set forth in this Office Action. Response to Arguments Applicant's arguments filed May 11, 2026 have been fully considered but they are not persuasive. Regarding applicant’s argument under Double Patenting that it is premature to comment further on these rejections at the present stage of prosecution, examiner respectfully argues that the rejection is proper, as stated above in the corresponding rejection. Conclusion THIS ACTION IS MADE FINAL. Applicant is reminded of the extension of time policy as set forth in 37 CFR 1.136(a). A shortened statutory period for reply to this final action is set to expire THREE MONTHS from the mailing date of this action. In the event a first reply is filed within TWO MONTHS of the mailing date of this final action and the advisory action is not mailed until after the end of the THREE-MONTH shortened statutory period, then the shortened statutory period will expire on the date the advisory action is mailed, and any nonprovisional extension fee (37 CFR 1.17(a)) pursuant to 37 CFR 1.136(a) will be calculated from the mailing date of the advisory action. In no event, however, will the statutory period for reply expire later than SIX MONTHS from the mailing date of this final action. Any inquiry concerning this communication or earlier communications from the examiner should be directed to CLAY LEE whose telephone number is (571)272-3309. The examiner can normally be reached Monday-Friday 8-5pm 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, Neha Patel can be reached at (571)270-1492. 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. /CLAY C LEE/ Primary Examiner, Art Unit 3699
Read full office action

Prosecution Timeline

Mar 21, 2025
Application Filed
Feb 18, 2026
Non-Final Rejection mailed — §DOUBLEPATENT
Apr 16, 2026
Interview Requested
May 04, 2026
Examiner Interview Summary
May 04, 2026
Applicant Interview (Telephonic)
May 11, 2026
Response Filed
Aug 18, 2026
Final Rejection mailed — §DOUBLEPATENT (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12725153
METHOD AND APPARATUS FOR BOOKKEEPING, OWNING AND TRANSFERRING DIGITALLY LOCKED COINS
1y 3m to grant Granted Sep 01, 2026
Patent 12718223
USER AUTHENTICATION USING A BROWSER COOKIE SHARED BETWEEN A BROWSER AND AN APPLICATION
2y 2m to grant Granted Aug 25, 2026
Patent 12711508
REAL-TIME FRAUD SESSION TERMINATION IN DIRECT PAY SYSTEM
2y 7m to grant Granted Aug 18, 2026
Patent 12711509
SYSTEMS AND METHODS FOR IMPROVED FRAUD DETECTION
2y 8m to grant Granted Aug 18, 2026
Patent 12701013
MEDIA SHARING PLATFORM
1y 11m to grant Granted Aug 04, 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
55%
Grant Probability
99%
With Interview (+57.5%)
3y 4m (~1y 10m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 243 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