Examiner Mark A. Chapman
Grant ratio: 92.7% (98th percentile in Art Unit 1721 among examiners with at least 20 applications). Average office actions per grant: 1.11. Most common rejection type: §103.
Appears inactive
Last office action in data: September 2021
Examiner record
Save this analysis
Download this examiner report.
Log in / Sign Up to exportPeer comparisons
| Group | Examiners | Average grant ratio | Average office actions / grant |
|---|---|---|---|
| Art Unit | 37 | 47.6% | 2.15 |
| Group | 274 | 44.1% | 2.20 |
| Tech Center | 1,816 | 43.3% | 2.14 |
| USPTO | 16,620 | 51.8% | 1.98 |
Office actions per application
| Office actions | Applications | Share of applications |
|---|---|---|
| No OA observed | 6 | 0.8% |
| 1 OA | 710 | 89.5% |
| 2 OAs | 69 | 8.7% |
| 3 OAs | 5 | 0.6% |
| 4 OAs | 2 | 0.3% |
| 5+ OAs | 1 | 0.1% |
Each application is counted once. “5+” includes all higher counts.
Grant history
Recent ratios may be lower while applications remain pending.
Yearly counts
| Year | Applications | Grants | Grant rate |
|---|---|---|---|
| 2008 | 46 | 43 | 93.5% |
| 2009 | 59 | 47 | 79.7% |
| 2010 | 71 | 64 | 90.1% |
| 2011 | 62 | 57 | 91.9% |
| 2012 | 59 | 55 | 93.2% |
| 2013 | 61 | 57 | 93.4% |
| 2014 | 37 | 35 | 94.6% |
| 2015 | 47 | 43 | 91.5% |
| 2016 | 52 | 50 | 96.2% |
| 2017 | 69 | 65 | 94.2% |
| 2018 | 40 | 38 | 95.0% |
| 2019 | 71 | 67 | 94.4% |
| 2020 | 65 | 61 | 93.8% |
| 2021 | 54 | 53 | 98.1% |
Rejections by office-action stage
| Office-action stage | Actions observed | §101 | §102 | §103 | §112 |
|---|---|---|---|---|---|
| Action 1 | 787 | 0.5% | 15.0% | 42.4% | 0.6% |
| Action 2 | 77 | 1.3% | 20.8% | 37.7% | 2.6% |
| Action 3 | 8 | 0.0% | 0.0% | 75.0% | 0.0% |
| Action 4 | 3 | 0.0% | 66.7% | 33.3% | 0.0% |
| Action 5 | 1 | 0.0% | 0.0% | 100.0% | 0.0% |
| Action 6 | 1 | 0.0% | 0.0% | 100.0% | 0.0% |
| Action 7 | 1 | 0.0% | 0.0% | 100.0% | 0.0% |
| Action 8 | 1 | 0.0% | 0.0% | 100.0% | 0.0% |
Section 101 rejections
Last 3 years: 2023-10-23–2026-10-23. All years includes every dated office action in the data.
By year
1.6%
0.0%
0.0%
0.0%
0.0%
0.0%
2014: Alice
0.0%
6.0%
0.0%
1.4%
0.0%
2019: PEG
0.0%
0.0%
0.0%
Each bar is the percentage of office actions with a §101 rejection.
PTAB appeals
No PTAB decisions could be matched to this examiner.
Older and transferred applications may not have a reliable examiner match. Data through Oct. 30, 2026.