Art Unit 1638
Group 1630Stem Cells and Nucleic Acid Related Therapy
- Active examiners
- 33
- Average office actions per grant
- 1.45
Grant ratio
- Art Unit 1638
- 70.8%
- Group 1630
- 52.0%
Active examiners
| Brent T Page | 82.2% | 1.44 | August 2026 |
|---|---|---|---|
| Medina A. Ibrahim | 83.2% | 1.35 | August 2026 |
| Cynthia Collins | 82.4% | 1.30 | August 2026 |
| Cathy Kingdon Worley | 80.0% | 1.38 | August 2026 |
| David H. Kruse, Ph.D | 81.8% | 1.49 | August 2026 |
| Anne R. Kubelik, Ph.D | 76.9% | 1.58 | August 2026 |
| Li Zheng | 79.5% | 1.54 | August 2026 |
| Vinod Kumar | 73.5% | 1.19 | August 2026 |
| Phuong T Bui | 76.2% | 1.41 | August 2026 |
| Russell Kallis | 88.0% | 1.26 | June 2026 |
| Michael C Wilson | 34.8% | 2.83 | August 2026 |
| Michael Burkhart | 47.1% | 1.95 | August 2026 |
| Kevin K. Hill | 22.3% | 2.40 | July 2026 |
| Robert M Kelly | 48.9% | 1.97 | August 2026 |
| Keith O. Robinson | 70.6% | 1.14 | August 2026 |
| Eric J Rogers | 30.5% | 1.85 | August 2026 |
| Lauren K Van Buren | 20.8% | 3.34 | August 2026 |
| Thomas Russe Amick | 36.6% | 2.28 | August 2026 |
| John David Moore | 22.5% | 1.35 | August 2026 |
| Fatimah Khalaf Matalkah | 12.8% | 1.30 | August 2026 |
| Allison M Johnson | 15.8% | 1.75 | August 2026 |
| Catherine L Mccormick | 6.7% | 1.00 | August 2026 |
| Hanna M Thueson | 1.7% | 1.00 | August 2026 |
| Matthew R Keogh | 57.4% | 1.71 | August 2026 |
| Jason Deveau-Rosen | 52.8% | 1.65 | August 2026 |
| Russell T Boggs | 53.1% | 1.70 | August 2026 |
| Mykola V Kovalenko | 58.3% | 1.76 | August 2026 |
| Rebecca Stephens | 41.7% | 1.84 | August 2026 |
| Tracy Vivlemore | 77.3% | 1.58 | August 2026 |
| Walter Jackson Iii | 0.0% | N/A | August 2026 |
| Adam M Smith | 0.0% | N/A | August 2026 |
| Vyoma Shubham Tiwari | 33.3% | 2.43 | August 2026 |
| Alexandra Connors | 17.6% | 3.14 | August 2026 |
Examiner distribution
- Median grant ratio
- 50.9%
- Middle 50% of grant ratios
- 22.4%–77.0%
- Median office actions / grant
- 1.58
- Middle 50% of office actions / grant
- 1.35–1.85
Active examiners with at least 20 applications.
Other associated examiners
Examiners without recent activity.
| Stuart F. Baum | 83.3% | 1.29 | October 2023 Appears inactive |
|---|---|---|---|
| David T. Fox | 88.0% | 1.36 | October 2020 Appears inactive |
| Elizabeth Mcelwain | 88.6% | 1.36 | February 2023 Appears inactive |
| Eileen B. O’Hara | 92.7% | 1.18 | February 2020 Appears inactive |
| Lee A. Visone | 85.2% | 1.39 | June 2021 Appears inactive |
| Steven Bernacki | 79.1% | 1.52 | August 2015 Appears inactive |
| Ashwin Mehta | 74.3% | 1.30 | December 2010 Appears inactive |
| Jared Shapiro | 74.6% | 1.77 | November 2017 Appears inactive |
| Jeff Bolland, Ph.D | 72.6% | 1.65 | June 2014 Appears inactive |
| Ashley K. Buran | 50.9% | 1.85 | July 2025 Appears inactive |
| Maria Leavitt | 68.3% | 2.36 | January 2026 Appears inactive |
| Stephen Uyeno | 35.1% | 1.90 | February 2022 Appears inactive |
| Shubo (Joe) Zhou | 95.0% | 2.27 | June 2025 Appears inactive |
| Georgia Helmer | 90.0% | 1.00 | September 2008 Appears inactive |
| Paul Roath | 0.0% | N/A | April 2011 Appears inactive |
Based on available public USPTO records; may be incomplete.