Examiner: DUFFY, DAVID W

Analysis

David W. Duffy is an examiner within Tech Center 3700, specifically assigned to Art Unit 3700. Throughout his tenure, he has reached resolutions on 482 cases. This volume of work establishes a significant data set for evaluating his specific prosecution tendencies and procedural habits within the mechanical engineering and manufacturing sectors typically handled by this center.

The examiner maintains an allowance rate of 53.1 percent. For practitioners navigating his docket, the interview lift of 23.1 percent is a critical metric. This figure indicates that engaging in direct verbal communication with the examiner is associated with a substantial increase in the probability of securing a patent grant. This lift suggests that Duffy may be receptive to clarifying amendments or oral arguments that resolve outstanding rejections more effectively than written responses alone.

The median days to allowance for cases under his review is 1223. This duration reflects the typical timeline from filing to a successful grant. When compared to the 53.1 percent allowance rate, the pendency suggests a prosecution cycle that may involve multiple rounds of office actions. Attorneys should prepare for a process that requires persistent engagement over several years to reach a final resolution, utilizing the 23.1 percent interview lift as a strategic tool.