Examiner: CHANG, DANIEL D

Analysis

Daniel D Chang is an examiner in Tech Center 2800 and Art Unit 2649. The examiner has a high volume of 1228 resolved cases and an allowance rate of 91.3%. This 91.3% rate is very high, suggesting that almost all applications handled by this examiner result in a patent grant. The 1228 resolved cases indicate a very consistent and predictable prosecution environment.

The interview lift is 4.1%, which shows a small positive effect from direct communication. While the 4.1% lift is modest, the baseline allowance rate of 91.3% is already so high that interviews may only be necessary for the most complex issues. The median days to allowance is 646, which is a relatively short timeframe for patent prosecution. This 646-day median indicates the speed of the process. Practitioners can expect a timely and generally successful experience, with the 1228 resolved cases supporting this 646-day timeline. The combination of a 91.3% allowance rate and a 646-day median makes this a favorable unit for applicants.