Prosecution Insights
Last updated: October 27, 2026

Zachary S Skelding, USPTO Patent Examiner

Listed by the USPTO as SKELDING, ZACHARY S

Tech Center 1600 • Art Units: 1600 1644 1674

This examiner grants 60% of resolved cases

Analysis

Zachary S. Skelding serves in Tech Center 1600 and Art Unit 1600, where he has handled 835 resolved cases. The allowance rate is 59.8 percent, suggesting a balanced environment for patent applicants. This rate is paired with a median days to allowance of 1331, which serves as a benchmark for the duration of the prosecution process.

The interview lift is 41.1 percent, indicating that direct engagement with the examiner provides a significant boost to the 59.8 percent baseline allowance rate. This lift can be a decisive factor in resolving outstanding issues and securing a patent. Practitioners should factor the 1331-day median duration into their strategic planning when considering an interview.

Top companies such as Amgen Inc., University of Leicester, and Genmab A/S are active in this examiner's caseload. These applicants are supported by firms like NELSON MULLINS RILEY & SCARBOROUGH LLP, Knobbe, Martens, Olson & Bear, LLP, and Neal, Gerber & Eisenberg LLP. With 835 resolved cases, the examiner's statistics offer a reliable basis for predicting outcomes.

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

Performance Statistics

59.8%
Allow Rate
At TC average
880
Total Applications
+41.1%
Interview Lift
1331
Avg Prosecution Days
Based on 835 resolved cases, 2023–2026

Rejection Statute Breakdown

2.8%
§101 Eligibility
14.4%
§102 Novelty
27.3%
§103 Obviousness
40.0%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18184860 BCMA CHIMERIC ANTIGEN RECEPTORS AND USES THEREOF Non-Final OA Novartis AG
18046865 METHODS FOR ASSAYING T-CELL DEPENDENT BISPECIFIC ANTIBODIES Final Rejection Genentech, Inc.
18142129 GLYCOENGINEERING Non-Final OA The General Hospital Corporation
17921794 PHARMACEUTICAL FORMULATION Final Rejection AMGEN INC.
17775386 Method for Reduced Aggregate Formation in Downstream Processing of Bispecific Antigen-Binding Molecules Final Rejection AMGEN INC.
18314577 Single chain binding molecules comprising N-terminal ABP Non-Final OA AMGEN RESEARCH (MUNICH) GMBH
16586318 CROSS-SPECIES-SPECIFIC BISPECIFIC BINDERS Non-Final OA AMGEN RESEARCH (MUNICH) GMBH
18474631 METHODS FOR TREATING CONDITIONS ASSOCIATED WITH MASP-2 DEPENDENT COMPLEMENT ACTIVATION Non-Final OA University of Leicester
18355871 Methods for Treating Conditions Associated with MASP-2 Dependent Complement Activation Non-Final OA University of Leicester
18312891 METHODS FOR TREATING CONDITIONS ASSOCIATED WITH MASP-2 DEPENDENT COMPLEMENT ACTIVATION Non-Final OA University of Leicester
18109708 HUMANIZED OR CHIMERIC CD3 ANTIBODIES Non-Final OA Genmab A/s
16582428 HUMANIZED OR CHIMERIC CD3 ANTIBODIES Non-Final OA GENMAB A/S

Facing This Examiner?

IP Author analyzes examiner patterns and generates tailored response strategies with the highest chance of allowance.

Build Your Strategy

Who Appears Before This Examiner

Top companies before this examiner

Law firms appearing most often

Frequently Asked Questions

What is examiner Zachary S Skelding's allowance rate?

59.8% of resolved applications examined by Zachary S Skelding were allowed (835 resolved cases), compared with 37.3% across Art Unit 1600 over the last five years.

Does an interview help with examiner Zachary S Skelding?

This examiner's interview lift is +41.1 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Zachary S Skelding take to allow a patent?

Applications allowed by Zachary S Skelding took 1,331 days on average from filing to allowance.

Which art unit does examiner Zachary S Skelding work in?

Zachary S Skelding examines applications in Art Unit 1600 in Tech Center 1600 (Biotechnology & Pharmaceuticals).

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month