Prosecution Insights
Last updated: April 19, 2026
Application No. 18/301,773

CFILTER CACHEING FOR CRYPTO CURRENCY WALLET

Final Rejection §101
Filed
Apr 17, 2023
Examiner
JACOB, WILLIAM J
Art Unit
3696
Tech Center
3600 — Transportation & Electronic Commerce
Assignee
Matterfi
OA Round
2 (Final)
48%
Grant Probability
Moderate
3-4
OA Rounds
3y 9m
To Grant
82%
With Interview

Examiner Intelligence

Grants 48% of resolved cases
48%
Career Allow Rate
164 granted / 338 resolved
-3.5% vs TC avg
Strong +34% interview lift
Without
With
+34.0%
Interview Lift
resolved cases with interview
Typical timeline
3y 9m
Avg Prosecution
48 currently pending
Career history
386
Total Applications
across all art units

Statute-Specific Performance

§101
39.9%
-0.1% vs TC avg
§103
32.0%
-8.0% vs TC avg
§102
12.0%
-28.0% vs TC avg
§112
10.0%
-30.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 338 resolved cases

Office Action

§101
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 . Claim Status Claims 1-4, and 13-28 are currently pending and are presented for examination on the merits; and Claims 16-23 are directed to a non-elected species (directed to “a peer address that points back to the wallet . . . configured to respond to requests . . .”) and are hereby withdrawn. Objections Specification At [0031], the phrase “this the accelerator server 104 will” resulting from amendment is confusing. Please fix, and check for similar errors throughout. Paragraph [0060A] will be entered as a description of FIG. 3, but Applicant is cautioned not to introduce new matter into the disclosure. Appropriate correction is required. Claim Rejections - 35 USC § 101 35 U.S.C. 101 reads as follows: Whoever invents or discovers any new and useful process, machine, manufacture, or composition of matter, or any new and useful improvement thereof, may obtain a patent therefor, subject to the conditions and requirements of this title. Claims 1-4, 13-15, and 24-28 are rejected under 35 U.S.C. § 101, because they recite non-patentable subject matter under MPEP § 2106, e.g., the 2019 PEG, October update. The claimed invention is directed to a judicial exception (e.g., an abstract idea, etc.) without practical application or significantly more. More particularly, when considering subject matter eligibility under 35 U.S.C. 101, it must be determined whether the claim is directed to one of the four statutory categories of invention, i.e., process, machine, manufacture, or composition of matter. If the claim does fall within one of the statutory categories, it must then be determined whether the claim is directed to a judicial exception (i.e., law of nature, natural phenomenon, and abstract idea), and if so, it must additionally be determined whether the claim is a patent-eligible application of the exception. If an abstract idea is present in the claim, any element or combination of elements in the claim must be sufficient to ensure that the claim amounts to significantly more than the abstract idea itself. Broad categories of abstract ideas include fundamental economic practices, certain methods of organizing human activities, an idea itself, and mathematical relationships/formulas. See, generally Alice Corporation Pty. Ltd. v. CLS Bank International, et al., 573 U.S. __ (2014) (citing Mayo Collaborative Servs. v. Prometheus Labs., Inc.,132 S. Ct. 1289, 1294, 1297-98 (2012)); Federal Register notice titled 2014 Interim Guidance on Patent Subject Matter Eligibility (79 FR 74618), which is found at: http:// www. gpo.gov/fdsys/pkg/FR-2014-12-16/pdf/2014-29414.pdf; 2015 Update to the Interim Guidance; the 2019 Revised Patent Subject Matter Eligibility Guidance, Fed. Reg., Vol. 84, No. 4, January 7, 2019; and associated Office memoranda. Under MPEP § 2106, Step 2a-prong 1, Claims 1-4, 13-15, and 24-28 recite a judicial exception(s), including a method of organizing human activity (e.g. fundamental economic principle). More particularly, the entirety of the method steps is directed towards calculating wallet balance, and updating a crypto wallet balance using filtering to minimize data processing, which is economic activity and a long-standing commercial practice previously performed by humans (e.g., cryptocurrency (e.g., bitcoin) owners, payment platforms, exchanges, etc.) via generic computing. As such, the inventions include an abstract idea under § 2106, and Alice Corporation. Under step 2a-prong 2, the claims fail to recite a practical application of the exception, because the extraneous limitations (e.g., the specific type of filtering (Rice-Golomb), etc.) merely add insignificant extra-solution activity to the judicial exception (MPEP 2106.05(g), generally link the use of the judicial exception to a particular technological environment or field of use (MPEP 2106.05(h)) and/or generally instruct an artisan to apply it (the method) across generic computing technology (as noted in the cited wikipedia article, Rice-Golomb filtering has roots as far back as the 1960s). A claim does not cease to be abstract for section 101 purposes simply because the claim confines the abstract idea to a particular technological environment in order to effectuate a real-world benefit. See Alice, 573 U.S. at 222; BSG Tech LLC v. BuySeasons, Inc., 899 F.3d 1281, 1287 (Fed. Cir. 2018); buySAFE, Inc. v. Google, Inc., 765 F.3d 1350, 1353 (Fed. Cir. 2014). That is to say, the claims are not directed to a new software or computer, but rather employs pre-existing software to do what’s been previously done. “[I]t is not enough, however, to merely improve a fundamental practice or abstract process by invoking a computer merely as a tool.” Customedia Techs., LLC v. Dish Network Corp., 951 F.3d 1359, 1364 (Fed. Cir. 2020) (citations omitted). More particularly, the claims fail to recite an improvement to the functioning of a computer or technology (under MPEP § 2106.05(a)), the use of a particular machine (under § 2106.05(b)), effect a transformation or reduction of a particular article (§ 2106.05(c)), or apply the judicial exception in some other meaningful way beyond generally linking the use of the judicial exception to a particular technological environment (§ 2106.05(e)). Under part 2b, the additional elements offered by the dependent claims either further delineate the abstract idea, add further abstract idea(s), adds insignificant extra-solution activity, or further instruct the artisan to apply it (the abstract idea(s)) across generic computing technology. The claims as a whole, do not amount to significantly more than the abstract idea itself. This is because no one claim effects an improvement to another technology or technical field, an improvement to the functioning of a computer itself, or move beyond a general link of the use of the abstract idea to a particular technological environment. Viewing the limitations as an ordered combination does not add anything further than looking at the limitations individually. Under Alice, merely applying or executing the abstract idea on one or more generic computer system (e.g., a computer system comprising a generic database; a generic element (NIC) for providing website access, etc.; a generic element for receiving user input; and a generic display on the computer, in any of their forms) to carry out the abstract idea more efficiently fails to cure patent ineligibility. See, e.g., Content Extraction, 776 F.3d at 1347 (claims reciting a “scanner” are nevertheless directed to an abstract idea); Mortg. Grader, Inc. v. First Choice Loan Serv. Inc., 811 F.3d 1314, 1324–25 (Fed. Cir. 2016) (claims reciting an “interface,” “network,” and a “database” are nevertheless directed to an abstract idea). Courts have recognized the following computer functions to be well‐understood, routine, and conventional functions when they are claimed in a merely generic manner: performing repetitive calculations, receiving, processing, and storing data, electronically scanning or extracting data from a physical document, electronic recordkeeping, automating mental tasks, and receiving or transmitting data over a network, e.g., using the Internet to gather data, MPEP 2106.05(d), wherein the italicized tasks are particularly germane to the instant invention. Response to Remarks Applicant’s remarks submitted on 12/1/2025 have been fully considered, but are not persuasive where objections/rejections are maintained. The amendments substantially change the scope of the claims, as such the prior combination of references under 102/103 have been withdrawn. The § 101 rejection, however, is maintained because tabulating transactions data to determine current balance is a long-standing commercial practice. The extraneous limitations recited in each claim fail to introduce an innovative concept. Golomb compression, hardware wallets, software wallets, etc. were all known in the art at the time of filing (see, prior art references of record, including US 2020/0014531 to Falco, and US 2019/0340586 to Sheng et al). Upon traversal, Applicant is asked to pinpoint claim limitation(s) that introduce innovative concept/significantly more, and is invited to interview the case to discuss the outstanding objections/rejections. 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 WILLIAM J JACOB whose telephone number is (571)270-3082. The examiner can normally be reached on M-F 8:00-5:00, alternating Fri. off. 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, Matthew Gart can be reached on 5712723955. 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. /WILLIAM J JACOB/Examiner, Art Unit 3696
Read full office action

Prosecution Timeline

Apr 17, 2023
Application Filed
Aug 30, 2024
Non-Final Rejection — §101
Mar 05, 2025
Response Filed
Mar 05, 2025
Response after Non-Final Action
Jun 15, 2025
Response after Non-Final Action
Jun 15, 2025
Response Filed
Dec 01, 2025
Response Filed
Mar 07, 2026
Final Rejection — §101 (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

3-4
Expected OA Rounds
48%
Grant Probability
82%
With Interview (+34.0%)
3y 9m
Median Time to Grant
Moderate
PTA Risk
Based on 338 resolved cases by this examiner. Grant probability derived from career allow rate.

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