Technology areas: Networking & Security • Transportation, E-Commerce & Mechanical Systems
39 pending office actions • 21 art units • 36 examiners • 0 of 39 (0%) have an AI response strategy ready • 113 patents granted in the last 365 days
Nchain Licensing AG has 39 pending office actions in Networking & Security. The matters are assigned to 36 distinct examiners across 21 distinct art units, showing a distributed portfolio with limited examiner repetition.
ZHANG, DUAN is the busiest examiner, with 2 pending matters. The assignment is a small part of the stated workload, so counsel should prioritize consistent portfolio controls and matter-specific analysis rather than relying on one examiner strategy.
Based on the USPTO statutory response window for each pending office action. 7 of the docket's apps have a known mailing date; the rest are excluded from the tile counts.
Every pending office action with a known statutory deadline, placed on a days-until-due axis. Dots left of Today are overdue; the further right, the more runway. Cases that share a deadline window stack vertically. 7 of the docket's apps have a known mailing date.
Difficulty is derived from the rejection statutes on the most recent pending office action. §101-driven and multi-statute cases are graded Hard; §112-only and obviousness-type double-patenting cases are graded Easy; everything else is Medium. "Unknown" means we have not yet parsed a statute for that office action.
| Bucket | Cases |
|---|---|
| §101 only | 2 (5%) |
| §101 + other | 15 (38%) |
| §103 only | 11 (28%) |
| §102 only | 1 (3%) |
| Double-patenting only | 2 (5%) |
| Double-patenting + other | 1 (3%) |
| Multi-statute (no §101) | 6 (15%) |
| No statute on record | 1 (3%) |
How the docket's pending cases split across USPTO tech-center bands.
Manual office-action response work runs about 10 hours per case. The time-saved bands below show what IP Author's prosecution pipeline typically delivers — a conservative 20% on the low end, 35% in the middle, 50% on the high end.
| Examiner | Apps on this docket | Allow rate | Interview lift |
|---|---|---|---|
| ZHANG, DUAN | 2 | 61.2% | +18.9% |
| STEINLE, ANDREW J | 2 | 87.5% | +19.7% |
| PEARSON, DAVID J | 2 | 78.1% | +11.7% |
| DIROMA, SCOTT MICHAEL | 1 | 28.9% | +28.9% |
| GARCIA MIZE, KARLYANNIE MARIE | 1 | 35.4% | +30.4% |
| CASTILHO, EDUARDO D | 1 | 48.7% | +18.8% |
| KUO, CHENYUH | 1 | 74.1% | +51.9% |
| ZELASKIEWICZ, CHRYSTINA E | 1 | 33.3% | +36.0% |
| ALI, AFAQ | 1 | 89.0% | +10.3% |
| GYORFI, THOMAS A | 1 | 75.6% | +16.5% |
Multi-statute / §101-driven matters, or cases in front of an examiner with an allow rate under 30%. The top 8 ordered by deadline are shown.
| App # | Title | Examiner | Due in |
|---|---|---|---|
| 17794003 | MECHANOCHEMICAL SNAr REACTIONS | CHANDRAKUMAR, NIZAL S | 2d overdue |
| 18286086 | UNIFORM RESOURCE IDENTIFIER | CHBOUKI, TAREK | 9d |
| 18573645 | TIERED CONSENSUS | ZHANG, DUAN | 29d |
| 16762490 | DISTRIBUTED COMPUTING SYSTEM AND METHOD | KANAAN, TONY P | 29d |
| 18850534 | COMMUNICATION SYSTEM, METHOD AND COMPUTER PROGRAM | DING, CHUNLING | 33d |
| 17919995 | METHOD FOR IMPLEMENTING A DIGITAL COIN SYSTEM USING A BLOCKCHAIN | OUSSIR, EL MEHDI | 60d |
| 19646485 | BLOCKCHAIN PAYMENT SERVICE API FOR MINER FEE QUOTING AND TRANSACTION SUBMISSION | DIROMA, SCOTT MICHAEL | — |
| 19358964 | CONSTRAINTS ON OUTPUTS OF AN UNLOCKING TRANSACTION IN A BLOCKCHAIN | CASTILHO, EDUARDO D | — |
Cases in front of an examiner whose interview lift is 10 percentage points or more — i.e. interviewed cases historically resolve more favorably than non-interviewed ones. The top 8 ordered by deadline are shown.
| App # | Title | Examiner | Due in |
|---|---|---|---|
| 18573645 | TIERED CONSENSUS | ZHANG, DUAN | 29d |
| 19646485 | BLOCKCHAIN PAYMENT SERVICE API FOR MINER FEE QUOTING AND TRANSACTION SUBMISSION | DIROMA, SCOTT MICHAEL | — |
| 19405105 | BLOCK PROPAGATION WITH POISONED TRANSACTIONS IN A BLOCKCHAIN NETWORK | ZHANG, DUAN | — |
| 19393224 | DIVISIBLE TOKENS | GARCIA MIZE, KARLYANNIE MARIE | — |
| 19358964 | CONSTRAINTS ON OUTPUTS OF AN UNLOCKING TRANSACTION IN A BLOCKCHAIN | CASTILHO, EDUARDO D | — |
| 19469787 | METHODS PERFORMED BY A COMPUTING DEVICE | KUO, CHENYUH | — |
| 19165068 | COMPUTER-IMPLEMENTED SYSTEM AND METHOD FOR TREE-BASED DATA VERIFICATION, COMMUNICATION AND INTEGRITY SOLUTIONS | ZELASKIEWICZ, CHRYSTINA E | — |
| 19288029 | SYSTEM FOR SECURING VERIFICATION KEY FROM ALTERATION AND VERIFYING VALIDITY OF A PROOF OF CORRECTNESS | STEINLE, ANDREW J | — |
| Art Unit | Apps |
|---|---|
| 3698 | 5 |
| 3699 | 5 |
| 2431 | 4 |
| 2497 | 3 |
| 3697 | 2 |
| 2435 | 2 |
| 2496 | 2 |
| 2439 | 2 |
| 2407 | 1 |
| 2445 | 1 |
| App # | Title | Examiner | Art Unit | Statutes | Status | Due in | AI | Filed |
|---|---|---|---|---|---|---|---|---|
| 19646485 | BLOCKCHAIN PAYMENT SERVICE API FOR MINER FEE QUOTING AND TRANSACTION SUBMISSION | DIROMA, SCOTT MICHAEL | 3698 | §101§103§112 | Non-Final OA | — | Pending | Apr 13, 2026 |
| 19405105 | BLOCK PROPAGATION WITH POISONED TRANSACTIONS IN A BLOCKCHAIN NETWORK | ZHANG, DUAN | 3699 | §103 | Final Rejection | — | Pending | Dec 01, 2025 |
| 19393224 | DIVISIBLE TOKENS | GARCIA MIZE, KARLYANNIE MARIE | 3698 | §103 | Non-Final OA | — | Pending | Nov 18, 2025 |
| 19358964 | CONSTRAINTS ON OUTPUTS OF AN UNLOCKING TRANSACTION IN A BLOCKCHAIN | CASTILHO, EDUARDO D | 3698 | §101§103§112Other | Non-Final OA | — | Pending | Oct 15, 2025 |
| 19469787 | METHODS PERFORMED BY A COMPUTING DEVICE | KUO, CHENYUH | 3697 | §103 | Non-Final OA | — | Pending | Sep 26, 2025 |
| 19165068 | COMPUTER-IMPLEMENTED SYSTEM AND METHOD FOR TREE-BASED DATA VERIFICATION, COMMUNICATION AND INTEGRITY SOLUTIONS | ZELASKIEWICZ, CHRYSTINA E | 3699 | §101§103§112 | Non-Final OA | — | Pending | Sep 12, 2025 |
| 19288029 | SYSTEM FOR SECURING VERIFICATION KEY FROM ALTERATION AND VERIFYING VALIDITY OF A PROOF OF CORRECTNESS | STEINLE, ANDREW J | 2497 | Other | Non-Final OA | — | Pending | Aug 01, 2025 |
| 19245801 | CONSTRAINING INJECTION OF UNLOCKING TRANSACTION BYTECODE | PEARSON, DAVID J | 2407 | DP | Non-Final OA | — | Pending | Jun 23, 2025 |
| 19235831 | COMPUTER-IMPLEMENTED SYSTEMS AND METHODS FOR COMBINING BLOCKCHAIN TECHNOLOGY WITH DIGITAL TWINS | STEINLE, ANDREW J | — | §101§112 | Non-Final OA | — | Pending | Jun 12, 2025 |
| 19235793 | COMPUTER-IMPLEMENTED SYSTEM AND METHOD FOR ENABLING ZERO-KNOWLEDGE PROOF | ALI, AFAQ | 2431 | §101§103§112Other | Non-Final OA | — | Pending | Jun 12, 2025 |
| 19227595 | METHOD AND SYSTEM FOR VERIFYING INTEGRITY OF A DIGITAL ASSET USING A DISTRIBUTED HASH TABLE AND A PEER TO-PEER DISTRIBUTED LEDGER | PEARSON, DAVID J | 2431 | §101Other | Non-Final OA | — | Pending | Jun 04, 2025 |
| 19226583 | BLOCKCHAIN-BASED METHOD AND SYSTEM FOR SPECIFYING THE RECIPIENT OF AN ELECTRONIC COMMUNICATION | GYORFI, THOMAS A | 2435 | DP | Non-Final OA | — | Pending | Jun 03, 2025 |
| 19134655 | COMPUTER IMPLEMENTED METHODS AND SYSTEMS FOR PUBLIC KEY INFRASTRUCTURE AND IDENTITY VERIFICATION | LOUIE, OSCAR A | 2445 | §102§103§112 | Non-Final OA | — | Pending | May 30, 2025 |
| 19219504 | SYSTEMS AND METHODS FOR EFFICIENT AND SECURE PROCESSING, ACCESSING AND TRANSMISSION OF DATA VIA A BLOCKCHAIN NETWORK | SHAHABI, ARI ARASTOO | 3697 | §101§102§103§112 | Non-Final OA | — | Pending | May 27, 2025 |
| 19132739 | BLOCKCHAIN-BASED NETWORK ADDRESS | CRIBBS, MALCOLM | 2497 | §101§103§112 | Non-Final OA | — | Pending | May 23, 2025 |
| 19189340 | AGENT-BASED TURING COMPLETE TRANSACTIONS INTEGRATING FEEDBACK WITHIN A BLOCKCHAIN SYSTEM | MURPHY, JOSEPH B | 2435 | §102§112DPOther | Non-Final OA | — | Pending | Apr 25, 2025 |
| 19095993 | SYSTEM AND METHOD FOR MULTI-PARTY GENERATION OF BLOCKCHAIN-BASED SMART CONTRACT | DHRUV, DARSHAN I | 2498 | §103Other | Non-Final OA | — | Pending | Mar 31, 2025 |
| 19105761 | COMPUTER-IMPLEMENTED METHODS AND SYSTEMS FOR IMPROVED COMMUNICATIONS ACROSS A BLOCKCHAIN NETWORK | SU, SARAH | 2431 | §102§103§112 | Non-Final OA | — | Pending | Feb 21, 2025 |
| 19105278 | DETERMINING SHARED SECRETS USING A BLOCKCHAIN | HUSSEIN, HASSAN A | 2497 | §103 | Final Rejection | — | Pending | Feb 20, 2025 |
| 19055194 | BLOCKCHAIN TRANSACTION COMPRISING RUNNABLE CODE FOR HASH-BASED VERIFICATION | FARAMARZI, GITA | 2496 | §103§112 | Non-Final OA | — | Pending | Feb 17, 2025 |
| 19050914 | METHODS AND DEVICES FOR PROPAGATING BLOCKS IN A BLOCKCHAIN NETWORK | DO, KHANG D | 2492 | §101§103§112DP | Non-Final OA | — | Pending | Feb 11, 2025 |
| 19026759 | REACTIVE AND PRE-EMPTIVE SECURITY SYSTEM FOR THE PROTECTION OF COMPUTER NETWORKS & SYSTEMS | SHAW, PETER C | 2493 | §103 | Non-Final OA | — | Pending | Jan 17, 2025 |
| 19016857 | SYSTEMS AND METHODS FOR EFFICIENT AND SECURE PROCESSING, ACCESSING AND TRANSMISSION OF DATA VIA A BLOCKCHAIN NETWORK | DOAN, TRANG T | 2431 | §101§103Other | Non-Final OA | — | Pending | Jan 10, 2025 |
| 18868134 | METHODS AND SYSTEMS FOR DISTRIBUTING AND VALIDATING ALERTS IN A DISTRIBUTED COMPUTING SYSTEM | LOZA, JANICE JOMARIE | 3698 | §101§103 | Final Rejection | — | Pending | Nov 21, 2024 |
| 18867390 | BLOCKCHAIN-BASED MESSAGE JOURNALING | TOLENTINO, RODERICK | 2439 | §103 | Final Rejection | — | Pending | Nov 19, 2024 |
| 18850534 | COMMUNICATION SYSTEM, METHOD AND COMPUTER PROGRAM | DING, CHUNLING | 3699 | §101§103§112 | Non-Final OA | 33d | Pending | Sep 24, 2024 |
| 18844865 | TRANSLUCENT BLOCKCHAIN DATABASE | LONG, EDWARD X | 2439 | §103 | Non-Final OA | — | Pending | Sep 06, 2024 |
| 18718351 | ZERO KNOWLEDGE PROOF BASED CHILD KEY AUTHENTICITY | BHANDARI, SHREYAJ RAM | 2434 | §101§102§103§112 | Non-Final OA | — | Pending | Jun 10, 2024 |
| 18715631 | ORDERED, APPEND-ONLY DATA STORAGE | IMMANUEL, ILSE I | 3699 | §101§103§112 | Non-Final OA | — | Pending | May 31, 2024 |
| 18698750 | METHODS AND SYSTEMS FOR DISTRIBUTED BLOCKCHAIN FUNCTIONALITIES | AYERS, MICHAEL W | 2195 | §102§112Other | Non-Final OA | — | Pending | Apr 04, 2024 |
| 18698749 | METHODS AND SYSTEMS FOR DISTRIBUTED BLOCKCHAIN FUNCTIONALITIES | PARK, YONG S | 3694 | §103 | Non-Final OA | — | Pending | Apr 04, 2024 |
| 18573645 | TIERED CONSENSUS | ZHANG, DUAN | 3699 | §102§103 | Non-Final OA | 29d | Pending | Dec 22, 2023 |
| 18286085 | BLOCKCHAIN BASED SYSTEM AND METHOD | IDIAKE, VINCENT I | 3698 | §103 | Non-Final OA | 8d overdue | Pending | Oct 06, 2023 |
| 18286086 | UNIFORM RESOURCE IDENTIFIER | CHBOUKI, TAREK | 2165 | §101§103 | Non-Final OA | 9d | Pending | Oct 06, 2023 |
| 18034029 | MERKLE PROOF ENTITY | LOPEZ, MIGUEL ALEXANDER | 2496 | §102 | Final Rejection | — | Pending | Apr 26, 2023 |
| 17919995 | METHOD FOR IMPLEMENTING A DIGITAL COIN SYSTEM USING A BLOCKCHAIN | OUSSIR, EL MEHDI | 2409 | §101§102§112 | Final Rejection | 60d | Pending | Oct 19, 2022 |
| 17794003 | MECHANOCHEMICAL SNAr REACTIONS | CHANDRAKUMAR, NIZAL S | 1625 | §102§103 | Non-Final OA | 2d overdue | Pending | Jul 20, 2022 |
| 16762490 | DISTRIBUTED COMPUTING SYSTEM AND METHOD | KANAAN, TONY P | 3696 | §101 | Final Rejection | 29d | Pending | May 07, 2020 |
| 16642852 | CONSTRAINTS ON INPUTS OF AN UNLOCKING TRANSACTION IN A BLOCKCHAIN | MANDEL, MONICA A | 3622 | §103 | Non-Final OA | — | Pending | Feb 27, 2020 |
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Start Free TrialNchain Licensing AG has 39 pending office actions as of October 2026, spread across 21 art units and 36 examiners.
Duan Zhang has the most, with 2 of Nchain Licensing AG's pending office actions.
Mostly Networking & Security (USPTO Tech Center 2400), based on where its pending office actions are examined.
