Prosecution Insights
Last updated: April 19, 2026
Application No. 18/574,412

A MULTI-MODE LOW-VOLTAGE ELECTRON MICROSCOPE

Non-Final OA §102
Filed
Dec 27, 2023
Examiner
MASKELL, MICHAEL P
Art Unit
2878
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Delong Instruments A S
OA Round
1 (Non-Final)
86%
Grant Probability
Favorable
1-2
OA Rounds
2y 4m
To Grant
96%
With Interview

Examiner Intelligence

Grants 86% — above average
86%
Career Allow Rate
917 granted / 1064 resolved
+18.2% vs TC avg
Moderate +10% lift
Without
With
+10.1%
Interview Lift
resolved cases with interview
Typical timeline
2y 4m
Avg Prosecution
17 currently pending
Career history
1081
Total Applications
across all art units

Statute-Specific Performance

§101
3.2%
-36.8% vs TC avg
§103
38.3%
-1.7% vs TC avg
§102
37.4%
-2.6% vs TC avg
§112
15.2%
-24.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1064 resolved cases

Office Action

§102
DETAILED ACTION Notice of Pre-AIA or AIA Status The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA . Claim Rejections - 35 USC § 102 The following is a quotation of the appropriate paragraphs of 35 U.S.C. 102 that form the basis for the rejections under this section made in this Office action: A person shall be entitled to a patent unless – (a)(1) the claimed invention was patented, described in a printed publication, or in public use, on sale, or otherwise available to the public before the effective filing date of the claimed invention. Claim(s) 14 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Von Harrach, et al (U.S. Patent Application Publication 2014/0077080 A1). Regarding claim 14, Von Harrach discloses an arrangement of an electron microscope and an EDS detector for detecting a signal of energy-dispersed X-ray radiation in the electron microscope (Title) wherein the electron microscope comprises a polepiece (306); wherein the EDS detector comprises a collimator (304; paragraph 0020) attached to the objective polepiece (Fig. 3; paragraph 0027). Allowable Subject Matter Claims 1-13 are allowed. The following is an examiner’s statement of reasons for allowance: the prior art at least fails to teach wherein the collimator is attached to the second objective polepiece as in independent claim 1. Mounting the collimator directly to the polepiece could pose disadvantages such as disturbing the magnetic circuit, causing astigmatism, etc., therefore doing so would not have been obvious to one of ordinary skill in the art. Any comments considered necessary by applicant must be submitted no later than the payment of the issue fee and, to avoid processing delays, should preferably accompany the issue fee. Such submissions should be clearly labeled “Comments on Statement of Reasons for Allowance.” Any inquiry concerning this communication or earlier communications from the examiner should be directed to MICHAEL P MASKELL whose telephone number is (571)270-3210. The examiner can normally be reached M-F 10A-6P. Examiner interviews are available via telephone, in-person, and video conferencing using a USPTO supplied web-based collaboration tool. To schedule an interview, applicant is encouraged to use the USPTO Automated Interview Request (AIR) at http://www.uspto.gov/interviewpractice. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Robert Kim can be reached at 571-272-2293. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of published or unpublished applications may be obtained from Patent Center. Unpublished application information in Patent Center is available to registered users. To file and manage patent submissions in Patent Center, visit: https://patentcenter.uspto.gov. Visit https://www.uspto.gov/patents/apply/patent-center for more information about Patent Center and https://www.uspto.gov/patents/docx for information about filing in DOCX format. For additional questions, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /MICHAEL MASKELL/Primary Examiner, Art Unit 2881 07 February 2026
Read full office action

Prosecution Timeline

Dec 27, 2023
Application Filed
Feb 07, 2026
Non-Final Rejection — §102 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12592359
APPARATUS, SYSTEM AND METHOD FOR ENERGY SPREAD ION BEAM
2y 5m to grant Granted Mar 31, 2026
Patent 12584943
Method for Producing a Substrate Comprising Multiple Tips for Scanning Probe Microscopy
2y 5m to grant Granted Mar 24, 2026
Patent 12586748
Structure for Particle Acceleration And Charged Particle Beam Apparatus
2y 5m to grant Granted Mar 24, 2026
Patent 12580092
COLLIMATOR AND METHODS OF FORMING SAME
2y 5m to grant Granted Mar 17, 2026
Patent 12555764
MASS SPECTROMETRY IMAGING
2y 5m to grant Granted Feb 17, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

1-2
Expected OA Rounds
86%
Grant Probability
96%
With Interview (+10.1%)
2y 4m
Median Time to Grant
Low
PTA Risk
Based on 1064 resolved cases by this examiner. Grant probability derived from career allow rate.

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