Prosecution Insights
Last updated: October 27, 2026

Isabella Sarah Hyo So North, USPTO Patent Examiner

Listed by the USPTO as NORTH, ISABELLA SARAH HYO SO

Tech Center 3700 • Art Units: 3783

This examiner grants 64% of resolved cases

Analysis

NORTH, ISABELLA SARAH HYO SO is assigned to tech center 3700 and art unit 3783. The profile contains 33 resolved cases, with an allowance rate of 63.6% and a median of 1357 days to allowance. The interview lift is 15.0%, indicating a potentially useful relationship between interviews and allowance outcomes. Because the resolved-case record is limited, these figures should inform preparation without being treated as a fixed prediction for every application.

The listed companies are Becton, Dickinson and Company, Becton Dickinson France, and Shl Medical AG. The listed firms are Bond, Schoeneck & King, PLLC - SANOFI, MCDONNELL BOEHNEN HULBERT & BERGHOFF LLP, and BakerHostetler. Counsel may consider an early interview strategy, particularly where a technical explanation could narrow disagreement, while accounting for the recorded allowance timing.

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

Performance Statistics

63.6%
Allow Rate
-6.4% vs TC avg
81
Total Applications
+15.0%
Interview Lift
1357
Avg Prosecution Days
Based on 33 resolved cases, 2023–2026

Rejection Statute Breakdown

1.7%
§101 Eligibility
19.6%
§102 Novelty
51.2%
§103 Obviousness
26.2%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
17782003 AN INJECTION DEVICE FOR DELIVERING A LIQUID DRUG Non-Final OA Novo Nordisk A/S
17774010 CATHETER TUBE FOR A STEERABLE CATHETER, AND METHOD FOR IMPLANTING AN IMPLANTABLE MEDICAL DEVICE BY MEANS OF A STEERABLE CATHETER Non-Final OA BIOTRONIK SE & Co. KG
18594723 CATHETER ASSEMBLY WITH MICRO-TEXTURED SURFACE AND METHOD OF MANUFACTURE Non-Final OA Becton, Dickinson and Company
18075188 CATHETER ASSEMBLY AND RELATED METHODS Final Rejection Becton, Dickinson and Company
17893825 Integrated Midline Catheter System Non-Final OA Becton, Dickinson and Company
17743941 Catheter Assembly and Related Devices and Methods Non-Final OA Becton, Dickinson and Company
18157394 METHODS AND SYSTEMS FOR PRESSURE-BASED FLUID CONTROL IN A FLUID DELIVERY SYSTEM Final Rejection INSULET CORPORATION
18003643 NEEDLELESS INJECTOR Non-Final OA DAICEL CORPORATION
17575332 CATHETER INSERTION DEVICE Final Rejection TELEFLEX MEDICAL LLC
18011773 Improvements of an optical sensing system of a drug delivery device Final Rejection Sanofi
17914484 Electronic System for a Drug Delivery Device Final Rejection Sanofi
17798649 LOCKING MECHANISM FOR A MEDICAMENT DELIVERY DEVICE Final Rejection SHL MEDICAL AG
17692997 COMPOSITIONS AND METHODS FOR USING ALTERNATING ELECTRIC FIELDS TO DISRUPT NANOPARTICLES Final Rejection NOVOCURE GMBH
18018529 Peelable Cathlock Non-Final OA Bard Peripheral Vascular, Inc.

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Frequently Asked Questions

What is examiner Isabella Sarah Hyo So North's allowance rate?

63.6% of resolved applications examined by Isabella Sarah Hyo So North were allowed (33 resolved cases), compared with 67.3% across Art Unit 3783 over the last five years.

Does an interview help with examiner Isabella Sarah Hyo So North?

This examiner's interview lift is +15.0 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Isabella Sarah Hyo So North take to allow a patent?

Applications allowed by Isabella Sarah Hyo So North took 1,357 days on average from filing to allowance.

Which art unit does examiner Isabella Sarah Hyo So North work in?

Isabella Sarah Hyo So North examines applications in Art Unit 3783 in Tech Center 3700 (Medical Devices & Mechanical Engineering).

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