Prosecution Insights
Last updated: October 01, 2026

Examiner: HALL, ELIZABETH MARY CAMPBEL

Tech Center 2800 • Art Units: 2872

This examiner grants 68% of resolved cases

Analysis

Elizabeth Mary Campbel Hall has resolved 37 cases in Art Unit 2872. The examiner currently holds an allowance rate of 67.6%. This figure reflects a generally receptive approach to applications within Tech Center 2800. The 37 resolved cases offer a preliminary view of the examiner's approach in Art Unit 2872.

The data indicates an interview lift of 9.5%. This is a relatively small increase, suggesting that interviews have a limited impact on the final outcome compared to the initial 67.6% allowance rate. The median days to allowance is 1193, which sets a benchmark for the duration of the patent prosecution process. Practitioners should note that the 1193 median days to allowance indicates the prosecution period in Tech Center 2800. The 9.5% interview lift suggests that while interviews are helpful, they may not be as transformative as they are with other examiners.

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

Performance Statistics

67.5%
Allow Rate
-0.5% vs TC avg
79
Total Applications
+7.2%
Interview Lift
1222
Avg Prosecution Days
Based on 40 resolved cases, 2023–2026

Rejection Statute Breakdown

0%
§101 Eligibility
18.9%
§102 Novelty
52.9%
§103 Obviousness
27.0%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
19007765 SPECTRAL FILTER, AND IMAGE SENSOR AND ELECTRONIC DEVICE INCLUDING THE SPECTRAL FILTER Final Rejection SAMSUNG ELECTRONICS CO, LTD.
18120872 SPECTRAL FILTER, IMAGE SENSOR INCLUDING THE SPECTRAL FILTER, AND ELECTRONIC DEVICE INCLUDING THE SPECTRAL FILTER Non-Final OA SAMSUNG ELECTRONICS CO., LTD.
18093120 IMAGE SENSOR AND ELECTRONIC APPARATUS INCLUDING THE IMAGE SENSOR Non-Final OA SAMSUNG ELECTRONICS CO., LTD.
17886184 ELECTRONIC DEVICE INCLUDING CAMERA MODULE Non-Final OA SAMSUNG ELECTRONICS CO., LTD.
17884740 OPTICAL FILTER, AND IMAGE SENSOR AND ELECTRONIC DEVICE INCLUDING OPTICAL FILTER Final Rejection SAMSUNG ELECTRONICS CO., LTD.
18652620 Devices With Adjustable-Tint Lenses Final Rejection Apple Inc.
18441457 Device With Light-Shielding Structure Final Rejection Apple Inc.
18972525 ZOOM LENS, PROJECTION TYPE DISPLAY DEVICE, AND IMAGING APPARATUS Non-Final OA FUJIFILM Corporation
17705861 Camera Module and Terminal Device Non-Final OA Huawei Technologies Co., Ltd.
17645150 MONOCOQUE SMART GLASSES TEMPLE PRE-FORM Non-Final OA GOOGLE LLC
18439587 LENS APPARATUS AND IMAGING APPARATUS Final Rejection CANON KABUSHIKI KAISHA
17898589 LENS APPARATUS AND IMAGE PICKUP APPARATUS Non-Final OA CANON KABUSHIKI KAISHA
18022409 Rear View Mirror Arrangement for a Motorcycle Non-Final OA Bayerische Motoren Werke Aktiengesellschaft
17996683 CAMERA MODULE Final Rejection LG INNOTEK CO., LTD.
17911955 LENS DRIVING DEVICE, AND CAMERA MODULE AND OPTICAL DEVICE INCLUDING SAME Non-Final OA LG INNOTEK CO., LTD.
18464074 Low Profile Optical Systems for Surgical Procedures Non-Final OA Alcon Inc.
18887053 OPHTHALMIC DEVICE AND CONTROL METHOD THEREOF Non-Final OA TOPCON CORPORATION
18355923 LENS MODULE AND CAMERA MODULE INCLUDING THE SAME Non-Final OA SAMSUNG ELECTRO-MECHANICS CO., LTD.
18188815 MEMORY MODULE, ACTUATOR, REAR VIEW DEVICE AND VEHICLE Final Rejection MOTHERSON INNOVATIONS COMPANY LIMITED
18862040 DESIGN METHOD FOR EYEGLASS LENS, PRODUCTION METHOD FOR EYEGLASS LENS, EYEGLASS LENS, AND EYEGLASSES Non-Final OA HOYA LENS THAILAND LTD.
18284728 SPECTACLE LENS AND SPECTACLES Non-Final OA HOYA LENS THAILAND LTD.
18255454 OPTICAL BODY, MANUFACTURING METHOD OF OPTICAL BODY, LAMINATE, AND IMAGE SENSOR Non-Final OA Dexerials Corporation
18475684 BLUR REDUCTION TECHNIQUES FOR SEMICONDUCTOR INSPECTION Non-Final OA Onto Innovation Inc.
17996350 MULTI-STRUCTURED FILM HAVING IMPROVED INTERFERENCE FRINGE, AND DISPLAY DEVICE COMPRISING SAME Final Rejection KOLON INDUSTRIES, INC.
18752584 LENS, METHOD, AND APPARATUS FOR ALTERATION OF COLOR PERCEPTION AND DISCRIMINABILITY Non-Final OA UTAH STATE UNIVERSITY

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