Prosecution Insights
Last updated: October 02, 2026

Examiner: SILVA RAINBOW, HEATHER ELISE

Tech Center 1700 • Art Units: 1731 1736

This examiner grants 33% of resolved cases

Analysis

Heather Elise Silva Rainbow operates within Art Unit 1731 in Tech Center 1700. With 45 resolved cases, she maintains an allowance rate of 33.3%. This suggests a rigorous examination process where 33.3% of applications reach allowance. Practitioners should note the significant interview lift of 50.7%. This figure indicates that engaging in a personal interview with the examiner increases the probability of securing an allowance compared to cases without such interaction.

The median time to allowance is 1404 days, reflecting the pendency for successful applications. When navigating this examiner's docket, the 50.7% interview lift suggests that verbal communication is a primary tool for overcoming the baseline grant probability. Applicants should prepare for a prosecution cycle that may span 1404 days. Strategy should focus on interviews to mitigate the results seen across the 45 resolved cases. Practitioners should consider these factors when filing in Tech Center 1700 and Art Unit 1731.

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

Performance Statistics

33.3%
Allow Rate
-31.7% vs TC avg
81
Total Applications
+50.7%
Interview Lift
1404
Avg Prosecution Days
Based on 45 resolved cases, 2023–2026

Rejection Statute Breakdown

1.8%
§101 Eligibility
16.4%
§102 Novelty
49.5%
§103 Obviousness
31.6%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
17777507 STABILIZED UREA-BASED CORE-SHELL FERTILIZER PARTICLES Non-Final OA SABIC Global Technologies B.V.
17546526 UREA FOR TOP DRESSING ENRICHED WITH CALCIUM, MAGNESIUM, SULFUR, AND POTASSIUM Final Rejection SABIC Global Technologies B.V.
18100813 CELLULOSE NANOCRYSTALS FOR PLANT STARTER PLUGS Final Rejection The Florida State University Research Foundation, Inc.
18258293 DELIVERY SYSTEM FOR PLANT PROTECTION Non-Final OA Omya International AG
17608240 FERTILIZER PARTICLES COMPRISING IRON Non-Final OA Yara UK Limited

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