Prosecution Insights
Last updated: October 27, 2026

Upul Priyadarshan Chandrasiri, USPTO Patent Examiner

Listed by the USPTO as CHANDRASIRI, UPUL PRIYADARSHAN

Tech Center 4100 • Art Units: 3663 3665 4100

This examiner grants 8% of resolved cases

Performance Statistics

8.3%
Allow Rate
-51.7% vs TC avg
58
Total Applications
-13.3%
Interview Lift
1129
Avg Prosecution Days
Based on 24 resolved cases, 2023–2026

Rejection Statute Breakdown

1.3%
§101 Eligibility
25.0%
§102 Novelty
53.3%
§103 Obviousness
19.2%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18892609 HIERARCHICAL SYSTEM FOR CONTROLLING AN AUTOMATED VEHICLE Final Rejection Robert Bosch GmbH
18421048 SYSTEMS AND METHODS FOR MANAGING VEHICLE EVENT DATA Non-Final OA TOYOTA JIDOSHA KABUSHIKI KAISHA
19161799 CONTROL DEVICE, CONTROL METHOD, AND NON-TRANSITORY COMPUTER-READABLE STORAGE MEDIUM Non-Final OA NEC Corporation
18453582 AUTOMATED PLATOONING SYSTEM AND METHOD THEREOF Final Rejection Kia Corporation
18557759 ORIENTATION-BASED POSITION DETERMINATION FOR RAIL VEHICLES Non-Final OA Siemens Mobility GmbH
18174834 SYSTEMS AND METHODS FOR RESPONDING TO ROAD CHANGES WITH CONDITIONAL CONTRACTION HIERARCHIES Final Rejection Verizon Patent and Licensing Inc.
18190472 APPARATUS, METHOD, AND COMPUTER PROGRAM PRODUCT FOR GENERATING BLUEPRINTS FOR NAVIGATION THROUGH OPERATIONAL SYSTEMS Final Rejection Honeywell International Inc.
18763237 MARINE PROPULSION SYSTEM AND MARINE VESSEL Final Rejection YAMAHA HATSUDOKI KABUSHIKI KAISHA
18127348 AGRICULTURAL SYSTEM AND METHOD FOR MONITORING SPRAY BOOMS OF AN AGRICULTURAL APPLICATOR Non-Final OA CNH Industrial America LLC
18451165 VEHICLE REMOTE CONTROL SYSTEM AND OPERATION METHOD THEREOF Final Rejection WISTRON NEWEB CORPORATION

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Frequently Asked Questions

What is examiner Upul Priyadarshan Chandrasiri's allowance rate?

8.3% of resolved applications examined by Upul Priyadarshan Chandrasiri were allowed (24 resolved cases), compared with 66.2% across Art Unit 3663 over the last five years.

Does an interview help with examiner Upul Priyadarshan Chandrasiri?

This examiner's interview lift is -13.3 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Upul Priyadarshan Chandrasiri take to allow a patent?

Applications allowed by Upul Priyadarshan Chandrasiri took 1,129 days on average from filing to allowance.

Which art unit does examiner Upul Priyadarshan Chandrasiri work in?

Upul Priyadarshan Chandrasiri examines applications in Art Unit 3663 in Tech Center 4100.

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