Prosecution Insights
Prosecution Insights
Tech Center 3600 • Art Units: 3641 3672 3676
This examiner grants 72% of resolved cases
David L. Andrews is an examiner in Tech Center 3600, working in Art Unit 3641. With a high volume of 983 resolved cases, the examiner has an allowance rate of 71.6 percent. This suggests a high probability of success for applicants. The median days to allowance is 1025, providing a clear expectation for the timeline of the prosecution process.
The interview lift is 16.2 percent, indicating that interviews are a productive way to increase the likelihood of allowance beyond the 71.6 percent baseline. Given the large dataset of 983 resolved cases, this lift is a reliable indicator of the examiner's responsiveness to direct communication. Practitioners should consider an interview as a standard part of their strategy to navigate the 1025-day median pendency. The combination of a high allowance rate and a positive interview lift makes Art Unit 3641 a relatively favorable environment for patent prosecution.
| App # | Title | Status | Assignee |
|---|---|---|---|
| 19317582 | A DOWNHOLE TOOL EMPLOYING A PRESSURE INTENSIFIER | Non-Final OA | Halliburton Energy Services, Inc. |
| 19286667 | INTERNAL SLIP INCLUDING ONE OR MORE SYMMETRICAL TEETH | Final Rejection | Halliburton Energy Services, Inc. |
| 19239373 | ELECTRICALLY OPERATED LOW POWER COMPLETION CONTROL SYSTEM | Non-Final OA | Halliburton Energy Services, Inc. |
| 19062310 | SAFETY VALVE EMPLOYING A MECHANICAL CONNECTING APPARATUS HAVING ONE OR MORE MAGNETIC TARGETS | Final Rejection | Halliburton Energy Services, Inc. |
| 18959063 | MAGNETICALLY COUPLED SUBSURFACE SAFETY VALVE | Non-Final OA | Halliburton Energy Services, Inc. |
| 18494395 | SEALING ASSEMBLY EMPLOYING A CYLINDRICAL EXTRUSION LIMITER | Final Rejection | Halliburton Energy Services, Inc. |
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