Prosecution Insights
Last updated: October 04, 2026

Examiner: AFFUL, CHRISTOPHER M

Tech Center 3700 • Art Units: 1777 3753

This examiner grants 76% of resolved cases

Analysis

Christopher M. Afful examines cases in Tech Center 3700 and Art Unit 1777, with 299 resolved cases. The examiner has an allowance rate of 75.9%, which indicates a high probability of grant for the 299 cases in his record. This 75.9% rate suggests that three out of every four applications reach a successful conclusion. This provides a positive outlook for practitioners working within this art unit.

The interview lift is 9.8%, showing that interviews provide a modest but clear benefit to the allowance rate. This 9.8% lift suggests that direct dialogue can be a helpful tool for clarifying technical points. The median days to allowance is 802, which establishes a predictable timeline for prosecution. With a median of 802 days, applicants can expect a relatively standard duration for the 75.9% of cases that are allowed. This 802-day figure is a key data point for managing client expectations.

Written from this page's own data; every figure is computed from USPTO records and verified before publication.

Performance Statistics

75.9%
Allow Rate
+5.9% vs TC avg
321
Total Applications
+9.8%
Interview Lift
802
Avg Prosecution Days
Based on 299 resolved cases, 2023–2026

Rejection Statute Breakdown

1.3%
§101 Eligibility
20.6%
§102 Novelty
46.9%
§103 Obviousness
28.5%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
19327887 TRANSFER LINE ARRANGEMENT Non-Final OA NEXANS
19298143 GAS CONTROL SYSTEM Non-Final OA MARLIN GAS SERVICES, LLC
19291328 SYSTEM FOR AUTONOMOUS REFUELING OF UNMANNED VESSELS Non-Final OA Elias Systems Inc.
19241194 DEVICE FOR LOADING PELLETS INTO REACTOR TUBES Non-Final OA Tubemaster, Inc.
18035217 APPARATUS FOR CLEANING POT-SHAPED HOLLOW BODIES, IN PARTICULAR TRANSPORT CONTAINERS FOR SEMICONDUCTOR WAFERS OR FOR EUV LITHOGRAPHY MASKS Final Rejection GSEC German Semiconductor Equipment Company GMBH
19082483 POSITION BASED SMART ELBOW CROSSOVER PROTECTION SYSTEM Final Rejection Knappco, LLC
19054062 INJECTION SYSTEM Final Rejection Clear IP Corporation
18867905 DEVICE FOR THE PRESSURE TESTING, EVACUATION AND FILLING OF AN ASSEMBLY Final Rejection Dürr Somac GmbH
18718657 SYSTEM FOR FILLING A CRYOGENIC CONTAINER ON A VEHICLE IN AN ENVIRONMENTALLY FRIENDLY WAY Final Rejection CRYOSHELTER BIOLNG GMBH
18156836 ARTICLE AND METHOD FOR TRANSPORTING USED AND FRESH COOKING OIL Non-Final OA Frontline International Inc.

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