Prosecution Insights
Last updated: October 02, 2026

The University of North Carolina at Chapel Hill

Technology area: Biotechnology & Pharmaceuticals

53 pending office actions • 28 art units • 45 examiners • 0 of 53 (0%) have an AI response strategy ready • 50 patents granted in the last 365 days

Analysis

The University of North Carolina at Chapel Hill currently manages 50 pending office actions in the Biotechnology & Pharmaceuticals technology area. These actions are distributed among 43 distinct examiners and 27 distinct art units. ARMSTRONG, SUSANNAH SIPPLE is the busiest examiner, holding 3 busiest examiner pending actions. The 27 distinct art units indicate that the university's biotechnology and pharmaceutical research is reviewed by many technical groups.

With 43 distinct examiners for the 50 pending office actions, the workload is spread relatively evenly, with only a few examiners handling more than one case. This distribution means the university must navigate various individual examiner styles and interpretations across the 27 distinct art units. The 3 busiest examiner pending actions assigned to ARMSTRONG, SUSANNAH SIPPLE represent a portion of the 50 pending office actions. Practitioners should coordinate across the 43 distinct examiners to ensure consistent prosecution outcomes.

The 27 distinct art units suggest that the portfolio touches on many specialized groups within the USPTO. Managing 50 pending office actions across these units requires an understanding of the specific technical standards applied by each group. Because the 43 distinct examiners are spread across 27 distinct art units, there is variety in the technical scrutiny applied to the applications. This structure requires a strategy that accounts for both individual examiner preferences and art unit trends.

Written from this page's own data; every figure is computed from USPTO records and verified before publication.

Portfolio Summary

53
Total Pending OAs
30
Non-Final OAs
19
Final Rejections
4
Advisory / Quayle

Response Deadline Pressure

Based on the USPTO statutory response window for each pending office action. 18 of the docket's apps have a known mailing date; the rest are excluded from the tile counts.

8
Overdue
0
Due this week
1
Due this month
7
Due in next 60 days
2
Due later

Deadline Fire Line

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. 18 of the docket's apps have a known mailing date.

-30dToday30d60d90d120d
Overdue (8)Due ≤ 30 days (1)Due ≤ 60 days (7)Due later (2)

Case Difficulty Mix

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.

23
Hard (43%)
24
Medium (45%)
6
Easy (11%)
0
Unknown (0%)

Rejection Statute Mix

BucketCases
§101 + other4 (8%)
§103 only13 (25%)
§102 only1 (2%)
§112 only5 (9%)
Double-patenting only1 (2%)
Double-patenting + other10 (19%)
Multi-statute (no §101)19 (36%)

Industry Mix

How the docket's pending cases split across USPTO tech-center bands.

40
Life Sciences
75% of docket
0
Information Tech
0% of docket
0
Communications
0% of docket
0
Semiconductors
0% of docket
5
Mechanical / Eng
9% of docket
8
Business / Other
15% of docket

Time-on-OA Estimate

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.

530 h
Manual time on pending OAs
106 h
Time saved (low, 20%)
186 h
Time saved (mid, 35%)
4.6 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
ARMSTRONG, SUSANNAH SIPPLE 3 30.0% +53.1%
NGUYEN, QUANG 3 38.0% +52.6%
CHOI, YOUNHEE JEON 2 71.1% +49.0%
MUI, CHRISTINE T 2 78.3% +19.9%
DONOHUE, SEAN R 2 41.4% +21.0%
SCHUBERG, LAURA J 2 23.6% +37.0%
RODZIWICZ, AARON M 1 70.4% +17.2%
KANG, TAE-SIK 1 58.2% +27.8%
ORTIZ, ADAM C 1 65.9% +34.6%
JACKSON, SHAWQUIA 1 78.0% -3.3%

Hard Cases (25)

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 #TitleExaminerDue in
16761876 METHODS AND COMPOSITIONS FOR CIRCULAR RNA MOLECULES NGUYEN, QUANG 103d overdue
17775817 METHODS, SYSTEMS, AND COMPUTER READABLE MEDIA FOR ENHANCED VIRTUAL CROSSMATCHING USING PHYSICAL-CROSSMATCH-OUTCOME-DATA-DERIVED MODEL AUGER, NOAH ANDREW 89d overdue
16006460 PATCH GRAFT COMPOSITIONS FOR CELL ENGRAFTMENT SCHUBERG, LAURA J 60d overdue
18438385 BIFUNCTIONAL CHEMICAL EPIGENENTIC MODIFIERS AND METHODS OF USE COPPINS, JANET L 52d overdue
17867135 PATCH GRAFT COMPOSITIONS FOR CELL ENGRAFTMENT SCHUBERG, LAURA J 44d overdue
16428138 Methods and Compositions for Treating Dystroglycanopathy Disorders SINGH, ANOOP KUMAR 44d overdue
19100114 INTRAVASCULAR DUAL FREQUENCY SONOTHROMBOLYSIS MEDIATED WITH MICROBUBBLES/NANODROPLETS CHOI, YOUNHEE JEON 43d overdue
19169745 FUNCTIONALIZED AROMATIC PHOSPHONIC ACIDS FOR DISPLAY AND SOLAR CELL APPLICATIONS KANG, TAE-SIK 33d

Interview Candidates (17)

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 #TitleExaminerDue in
16761876 METHODS AND COMPOSITIONS FOR CIRCULAR RNA MOLECULES NGUYEN, QUANG 103d overdue
16006460 PATCH GRAFT COMPOSITIONS FOR CELL ENGRAFTMENT SCHUBERG, LAURA J 60d overdue
17867135 PATCH GRAFT COMPOSITIONS FOR CELL ENGRAFTMENT SCHUBERG, LAURA J 44d overdue
19100114 INTRAVASCULAR DUAL FREQUENCY SONOTHROMBOLYSIS MEDIATED WITH MICROBUBBLES/NANODROPLETS CHOI, YOUNHEE JEON 43d overdue
19169745 FUNCTIONALIZED AROMATIC PHOSPHONIC ACIDS FOR DISPLAY AND SOLAR CELL APPLICATIONS KANG, TAE-SIK 33d
18720482 METHODS, SYSTEMS, AND COMPUTER READABLE MEDIA FOR USING TRAINED MACHINE LEARNING MODEL INCLUDING AN ATTENTION MODULE TO ESTIMATE GESTATIONAL AGE FROM ULTRASOUND IMAGE DATA CHOI, YOUNHEE JEON 41d
18558919 COMPOSITIONS AND METHODS RELATED TO THE TREATMENT OF OCULAR DISEASES IN EQUINES NGUYEN, QUANG 46d
17176561 FLOW CELLS UTILIZING SURFACE-ATTACHED STRUCTURES, AND RELATED SYSTEMS AND METHODS MUI, CHRISTINE T 76d

Top Art Units

Art UnitApps
1631 6
3797 3
1616 2
1797 2
1615 2
1628 2
1619 2
1672 2
1632 2
1654 2

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
19397315 Ephemeral Substrates for Oyster Aquaculture RODZIWICZ, AARON M 3642 §103 Non-Final OA — Pending Nov 21, 2025
19169745 FUNCTIONALIZED AROMATIC PHOSPHONIC ACIDS FOR DISPLAY AND SOLAR CELL APPLICATIONS KANG, TAE-SIK 1728 §102§103 Non-Final OA 33d Pending Apr 03, 2025
19096901 BASSINET ORTIZ, ADAM C 3673 §103 Non-Final OA — Pending Apr 01, 2025
19100114 INTRAVASCULAR DUAL FREQUENCY SONOTHROMBOLYSIS MEDIATED WITH MICROBUBBLES/NANODROPLETS CHOI, YOUNHEE JEON 3797 §103§112 Final Rejection 43d overdue Pending Jan 30, 2025
18869126 NOVEL HEPATOSELECTIVE POLYADENYLATING POLYMERASES INHIBITORS AND THEIR METHOD OF USE JACKSON, SHAWQUIA 1626 §112 Non-Final OA — Pending Nov 25, 2024
18866958 WEARABLE APPARATUS FOR DEEP TISSUE SENSING AND DIGITAL AUTOMATION OF DRUG DELIVERY SEBASTIAN, KAITLYN E 3797 §102§103 Non-Final OA 34d Pending Nov 18, 2024
18853592 ADAPTIVE PATCHES FOR DYNAMIC ORGANS ARMSTRONG, SUSANNAH SIPPLE — §102§103§112 Non-Final OA — Pending Oct 02, 2024
18884822 COMPOSITIONS AND METHODS FOR INHIBITING PATHOGEN INFECTION FOLEY, SHANON A — DP Non-Final OA — Pending Sep 13, 2024
18818163 BENZOYLGLYCINE DERIVATIVES AND METHODS OF MAKING AND USING SAME COUGHLIN, MATTHEW P — §112DP Non-Final OA — Pending Aug 28, 2024
18836156 COMPOSITIONS AND METHODS FOR ENHANCED DRUG LOADING OF LONG-ACTING IN SITU FORMING IMPLANTS AND USES THEREOF ARMSTRONG, SUSANNAH SIPPLE 1616 §102§103DP Non-Final OA — Pending Aug 06, 2024
18720482 METHODS, SYSTEMS, AND COMPUTER READABLE MEDIA FOR USING TRAINED MACHINE LEARNING MODEL INCLUDING AN ATTENTION MODULE TO ESTIMATE GESTATIONAL AGE FROM ULTRASOUND IMAGE DATA CHOI, YOUNHEE JEON 3797 §112 Final Rejection 41d Pending Jun 14, 2024
18674521 ENZYMATIC SYNTHESIS OF HOMOGENEOUS CHONDROITIN SULFATE OLIGOSACCHARIDES OLSON, ANDREA STEFFEL 1693 §102§103§112Other Non-Final OA — Pending May 24, 2024
18672675 SYSTEMS AND METHODS FOR NUCLEIC ACID PURIFICATION USING FLOW CELLS WITH ACTUATED SURFACE-ATTACHED STRUCTURES MUI, CHRISTINE T 1797 §103Other Final Rejection — Pending May 23, 2024
18706869 COMPOSITIONS AND METHODS FOR TREATING CANCER VIA PTP1B INHIBITION CHICKS, ASHLI ARIANA — §103 Non-Final OA — Pending May 02, 2024
18691748 MODIFIED PROTEIN DISULFIDE ISOMERASE AND USES THEREOF NOAKES, SUZANNE MARIE 1656 §102§112 Final Rejection 50d Pending Mar 13, 2024
18690230 IODIDE NANOPARTICLES AND COMPOSITIONS OF METHODS OF USE THEREOF DONOHUE, SEAN R — §102§103Other Non-Final OA — Pending Mar 07, 2024
18591127 Methods, Systems and Devices for Post-Fabrication Drug Loading HELM, CARALYNNE E 1615 §103§112 Non-Final OA — Pending Feb 29, 2024
18688256 METHODS AND COMPOSITIONS FOR INHIBITING FIBROSIS AND SCARRING CHERNYSHEV, OLGA N — §102§112 Non-Final OA — Pending Feb 29, 2024
18438385 BIFUNCTIONAL CHEMICAL EPIGENENTIC MODIFIERS AND METHODS OF USE COPPINS, JANET L 1628 §103§112Other Final Rejection 52d overdue Pending Feb 09, 2024
18578434 LABELED COMPOUNDS AND CALCIUM SENSING RECEPTOR LIGANDS FOR IMAGING AND USES THEREOF DONOHUE, SEAN R — §103§112 Non-Final OA — Pending Jan 11, 2024
18409276 METHODS AND COMPOSITIONS FOR ACTIVATION OF T CELLS USING NANOPARTICLES CONJUGATED WITH MULTIPLE LIGANDS FOR BINDING RECEPTORS ON T CELLS GODDARD, LAURA B — §102§103DP Non-Final OA — Pending Jan 10, 2024
18391998 POLYMERIC IMPLANTS WITH HIGH DRUG LOADING AND LONG-ACTING DRUG RELEASE AND METHODS OF MAKING THE SAME MITCHELL, EDWIN COLEMAN 1619 §103§112DP Final Rejection 96d overdue Pending Dec 21, 2023
18572427 DETECTION OF A TARGET VIRUS VIA SURFACE ENHANCED RAMAN SPECTROSCOPY (SERS) USING A PEPTIDE-MODIFIED NANOSTRUCTURED METAL KINSEY WHITE, NICOLE ERIN 1672 §103§112 Non-Final OA — Pending Dec 20, 2023
18571985 INVERTED CHIMERIC siRNA MOLECULES AND METHODS OF USE THEREOF POLIAKOVA-GEORGAN, EKATERINA 1637 §102§103DP Final Rejection — Pending Dec 19, 2023
18571412 INJECTABLE, BIODEGRADABLE AND REMOVABLE POLYMER BASED DRUG SUSPENSION FOR ULTRA-LONG-ACTING DRUG DELIVERY BARSKY, JARED 1628 §102§103§112Other Non-Final OA 34d Pending Dec 18, 2023
16963023 METHODS AND COMPOSITIONS FOR INHIBITION OF INNATE IMMUNE RESPONSE ASSOCIATED WITH AAV TRANSDUCTION CORDAS, EMILY ANN 1632 §112 Non-Final OA — Pending Dec 15, 2023
18388359 METHOD FOR EMULSIFICATION USING IONIC FLUX NILAND, PATRICK DENNIS 1763 §102 Non-Final OA — Pending Nov 09, 2023
18558919 COMPOSITIONS AND METHODS RELATED TO THE TREATMENT OF OCULAR DISEASES IN EQUINES NGUYEN, QUANG 1631 §102§103§112 Final Rejection 46d Pending Nov 03, 2023
18558886 USE OF CHEMICAL EPIGENETIC MODIFIERS TO MODULATE GENE EXPRESSION FROM VECTORS ARIETI, RUTH SOPHIA 1635 §103§112DP Non-Final OA — Pending Nov 03, 2023
18553312 METHODS FOR ASSESSING PROLIFERATION AND ANTI-FOLATE THERAPEUTIC RESPONSE VANN-OJUEKAIYE, KENDRA RAYCHELL 1682 §101§103§112DP Non-Final OA — Pending Sep 29, 2023
18551959 MODIFIED PEPTIDOMIMETICS AND METHODS OF USE BEANE, RANDALL L 1654 §101§102DP Non-Final OA — Pending Sep 22, 2023
18239036 PATCH GRAFT COMPOSITIONS FOR CELL ENGRAFTMENT PARK, HAEJIN S 1614 §103DPOther Final Rejection — Pending Aug 28, 2023
18334530 METHODS AND COMPOSITIONS FOR CIRCULAR RNA MOLECULES NGUYEN, QUANG 1631 §103Other Final Rejection — Pending Jun 14, 2023
18265797 METHOD FOR MEASUREMENT IN BIOSENSORS CONSTANTINE, CHARLES Z 1657 §103§112DP Non-Final OA — Pending Jun 07, 2023
18039387 ENGINEERED CELLS FUNCTIONALIZED WITH IMMUNE CHECKPOINT MOLECULES AND USES THEREOF KIM, TAEYOON 1631 §103 Final Rejection — Pending May 30, 2023
18322823 D-beta-HYDROXYBUTYRATE DEHYDROGENASES (BHBDhs) AND THEIR USE FOR KETONE MONITORING SINGH, SATYENDRA K 1657 §103 Non-Final OA — Pending May 24, 2023
17997791 MODIFIED ADENO-ASSOCIATED VIRUS VECTORS THAT EVADE NEUTRALIZING ANTIBODIES AND USES THEREOF CORNELIUS, CLAIRE ADRIENNE 1672 §101§102§103§112 Final Rejection — Pending Nov 02, 2022
17801705 EUTECTIC BASED ANESTHETIC COMPOSITIONS AND APPLICATIONS THEREOF ARMSTRONG, SUSANNAH SIPPLE 1616 §103§112 Non-Final OA — Pending Aug 23, 2022
17821371 Functionalized Mesoporous Silica via an Aminosilane Surfactant Ion Exchange Reaction: Controlled Scaffold Design and Nitric Oxide Release WHEELER, THURMAN MICHAEL 1619 §103§112 Final Rejection — Pending Aug 22, 2022
17759767 NANOMATERIALS FOR TARGETED TREATMENT OF PULMONARY TISSUE BOWLES, DAVID PAUL 1654 §103 Non-Final OA — Pending Jul 29, 2022
17759757 NANOMATERIALS FOR TARGETED TREATMENT AND IMAGING OF ANEURYSMAL MICROENVIRONMENT FISCHER, JOSEPH 1658 §103§112 Non-Final OA — Pending Jul 29, 2022
17867135 PATCH GRAFT COMPOSITIONS FOR CELL ENGRAFTMENT SCHUBERG, LAURA J 1631 §103§112DP Final Rejection 44d overdue Pending Jul 18, 2022
17775817 METHODS, SYSTEMS, AND COMPUTER READABLE MEDIA FOR ENHANCED VIRTUAL CROSSMATCHING USING PHYSICAL-CROSSMATCH-OUTCOME-DATA-DERIVED MODEL AUGER, NOAH ANDREW 1687 §101§103§112 Final Rejection 89d overdue Pending May 10, 2022
17775222 REACTIVE POLYAMIDEIMIDE OLIGOMERS, METHODS, AND ARTICLES QIAO, HUIHONG 1700 §103DP Non-Final OA — Pending May 06, 2022
17775221 REACTIVE OLIGOMERS, ADDITIVE MANUFACTURING METHODS, AND ARTICLES THEREOF LISTVOYB, GREGORY 1765 §103 Final Rejection 40d Pending May 06, 2022
17769917 METHODS AND COMPOSITIONS FOR CANCER TREATMENT USING NANOPARTICLES CONJUGATED WITH MULTIPLE LIGANDS FOR BINDING RECEPTORS ON NK CELLS CANELLA, KAREN A 1643 §112 Final Rejection 28d Pending Apr 18, 2022
17621303 IN SITU RECRUITMENT, REPROGRAMMING, AND RELEASE OF CAR-T CELLS NATARAJAN, MEERA 1643 §103 Non-Final OA — Pending Dec 21, 2021
17398982 PATCH GRAFT COMPOSITIONS FOR CELL ENGRAFTMENT HUHN, RICHARD A 1764 §112 Non-Final OA 69d Pending Aug 10, 2021
17424109 SALT NANOPARTICLES AND COMPOSITIONS AND METHODS OF USE THEREOF NGUYEN, NGOC-ANH THI 1615 §103 Non-Final OA — Pending Jul 19, 2021
17176561 FLOW CELLS UTILIZING SURFACE-ATTACHED STRUCTURES, AND RELATED SYSTEMS AND METHODS MUI, CHRISTINE T 1797 §103 Final Rejection 76d Pending Feb 16, 2021
16761876 METHODS AND COMPOSITIONS FOR CIRCULAR RNA MOLECULES NGUYEN, QUANG 1631 §103§112 Non-Final OA 103d overdue Pending May 06, 2020
16428138 Methods and Compositions for Treating Dystroglycanopathy Disorders SINGH, ANOOP KUMAR 1632 §103§112Other Final Rejection 44d overdue Pending May 31, 2019
16006460 PATCH GRAFT COMPOSITIONS FOR CELL ENGRAFTMENT SCHUBERG, LAURA J 1631 §103Other Non-Final OA 60d overdue Pending Jun 12, 2018

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