Prosecution Insights
Last updated: October 02, 2026

Examiner: ROYCE, LIAM A

Tech Center 1700 • Art Units: 1773 1777

This examiner grants 66% of resolved cases

Analysis

Liam A. Royce is an examiner in Art Unit 1773 of Tech Center 1700. The examiner has 546 resolved cases and an allowance rate of 65.6 percent. This rate reflects a consistent track record across a significant number of patent applications, providing a reliable baseline for applicants. The 65.6 percent allowance rate suggests a balanced examination environment where success is achievable through diligent prosecution and clear technical disclosure of the invention's merits.

The interview lift for this examiner is 22.1 percent. This positive figure indicates that interviews are an effective tool for applicants to increase their chances of allowance. Direct dialogue appears to be a helpful mechanism for resolving prosecution hurdles, as the 22.1 percent lift demonstrates a clear benefit to oral advocacy. Practitioners should leverage this by preparing thoroughly for interviews to address the examiner's specific concerns and negotiate claim language that satisfies both the applicant and the examiner.

The median days to allowance is 1055. This timeframe provides applicants with an estimate of the total time required to reach a final decision on their patent applications under this examiner's review. The 1055-day median is an essential metric for managing the expectations of stakeholders and for planning the timing of related filings. It underscores the importance of a proactive prosecution strategy to navigate the multi-year process and secure patent rights in a timely manner.

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

Performance Statistics

65.6%
Allow Rate
+0.6% vs TC avg
574
Total Applications
+22.1%
Interview Lift
1055
Avg Prosecution Days
Based on 546 resolved cases, 2023–2026

Rejection Statute Breakdown

0.9%
§101 Eligibility
14.9%
§102 Novelty
48.4%
§103 Obviousness
33.9%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18702796 FLUID STERILIZATION DEVICE Non-Final OA Stanley Electric Co., Ltd.
18750081 NATURAL MATERIAL FOR SEPARATING OIL-IN-WATER EMULSIONS Non-Final OA Saudi Arabian Oil Company
17842905 Fold Protection for Spiral Filtration Modules Utilizing UV Cured Polyurethane and Method of Providing Same Non-Final OA Henkel AG & Co. KGaA
18590525 WATER FILTRATION MEMBRANES AND SYSTEMS Final Rejection Khalifa University of Science and Technology
18693083 DRY-PROCESS MEMBRANE FOR FILTRATION Non-Final OA ENTEGRIS, INC.
18246312 PROCESS FOR PREPARING EXTRACELLULAR VESICLES Final Rejection LONZA SALES AG
16880941 Copper Foam for Water Purification Non-Final OA CellMo Materials Innovation, Inc.
18209395 Systems for Removing Sludge from or Distributing Fluids in Sludge or Waste Collection Vessels Non-Final OA ROBERTS MARKETING DE, INC.

Facing This Examiner?

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

Build Your Strategy

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