Prosecution Insights
Last updated: April 19, 2026
Application No. 18/138,807

PLASMA HAND TORCH WITH CAP-IN-PLACE LIMIT SWITCH

Non-Final OA §112
Filed
Apr 25, 2023
Examiner
CHRISTENSEN, DANIELLE M
Art Unit
3745
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Lincoln Global Inc.
OA Round
1 (Non-Final)
79%
Grant Probability
Favorable
1-2
OA Rounds
2y 9m
To Grant
90%
With Interview

Examiner Intelligence

Grants 79% — above average
79%
Career Allow Rate
498 granted / 628 resolved
+9.3% vs TC avg
Moderate +11% lift
Without
With
+11.1%
Interview Lift
resolved cases with interview
Typical timeline
2y 9m
Avg Prosecution
14 currently pending
Career history
642
Total Applications
across all art units

Statute-Specific Performance

§101
0.4%
-39.6% vs TC avg
§103
44.7%
+4.7% vs TC avg
§102
28.1%
-11.9% vs TC avg
§112
24.5%
-15.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 628 resolved cases

Office Action

§112
849DETAILED 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 § 112 The following is a quotation of 35 U.S.C. 112(b): (b) CONCLUSION.—The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the inventor or a joint inventor regards as the invention. The following is a quotation of 35 U.S.C. 112 (pre-AIA ), second paragraph: The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the applicant regards as his invention. Claims 4-5 and 14-15 are rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor (or for applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention. Claim 4 recites the limitation "the plasma hand torch" in lines 6-7. There is insufficient antecedent basis for this limitation in the claim. Proper antecedent basis has been provided for the “plasma torch” in claim 1. Claim 5 recites the limitation "the plasma hand torch" in line 2. There is insufficient antecedent basis for this limitation in the claim. Proper antecedent basis has been provided for the “plasma torch” in claim 1. Claim 14 recites the limitation "the plasma hand torch" in lines 6-7. There is insufficient antecedent basis for this limitation in the claim. Proper antecedent basis has been provided for the “plasma torch” in claim 11. Claim 15 recites the limitation "the plasma hand torch" in line 2. There is insufficient antecedent basis for this limitation in the claim. Proper antecedent basis has been provided for the “plasma torch” in claim 11. Allowable Subject Matter Claims 1-3, 6-13, and 16-22 are allowed. Claims 4-5 and 14-15 would be allowable if rewritten to overcome the rejection(s) under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), 2nd paragraph, set forth in this Office action and to include all of the limitations of the base claim and any intervening claims. The following is a statement of reasons for the indication of allowable subject matter: Regarding claim 1: Closest prior art: Namburu (US 11,310,901) and Simek et al. (US 8,624,150) Namburu discloses a plasma torch, comprising: a torch housing; an anode body at least partially located within the torch housing; a cathode body extending axially within the anode body; an electrode electrically connected to the cathode body at a distal portion of the cathode body; an electrical power terminal attached to the cathode body at a proximal portion of the cathode body within the torch housing; an electrical isolator at least partially surrounding the cathode body within the torch housing. Simek teaches a cap-in-place limit switch attached within the torch handle. The closest prior art fails to disclose or suggest that the electrical isolator having a slot at the proximal portion of the cathode body that receives the electrical power terminal and the cap-in-place limit switch attached to the electrical isolator within the torch housing. Claims 2-3 depend upon claim 1 and so would be allowable. If written to overcome the rejections under 35 USC 112(b), claims 4-5 would also be allowable, since they depend upon allowable claim 1. Regarding claim 6: Closest prior art: Namburu (US 11,310,901) and Simek et al. (US 8,624,150) Namburu discloses a plasma hand torch, comprising: a torch handle; an anode body at least partially located within the torch handle; a cathode body extending axially within the anode body; an electrode electrically connected to the cathode body at a distal portion of the cathode body; an electrical power terminal attached to the cathode body at a proximal portion of the cathode body within the torch handle; an electrical isolator at least partially surrounding the cathode body within the torch handle. Simek teaches a cap-in-place limit switch attached within the torch handle. The closest prior art fails to disclose or suggest that the electrical isolator having a slot at the proximal portion of the cathode body that receives the electrical power terminal and the cap-in-place limit switch attached to the electrical isolator within the torch housing. Claims 7-10 depend upon claim 6 and so are allowable. Regarding claim 11: Closest prior art: Namburu (US 11,310,901) and Simek et al. (US 8,624,150) Namburu discloses a plasma torch, comprising: a torch housing; an anode body at least partially located within the torch housing; a cathode body extending axially within the anode body; an electrode electrically connected to the cathode body at a distal portion of the cathode body; an electrical power terminal attached to the cathode body at a proximal portion of the cathode body within the torch housing; an electrical isolator mounted atop the anode body and at least partially surrounding the cathode body within the torch housing, wherein the electrical isolator is capable of limiting axial movement of the cathode body and the electrical power terminal in a distal direction; and a cap-in-place limit switch attached to the electrical isolator within the torch housing. Simek teaches a cap-in-place limit switch within the torch housing The closest prior art fails to disclose or suggest an electrical isolator having a slot at the proximal portion of the cathode body that receives the electrical power terminal and a cap-in-place limit switch attached to the electrical isolator within the torch housing. Claims 12-13 depend upon claim 11 and so are allowable. If written to overcome the rejections under 35 USC 112(b), claims 14-15 would also be allowable, since they depend upon allowable claim 11. Regarding claim 17: Closest prior art: Namburu (US 11,310,901) and Simek et al. (US 8,624,150) Namburu discloses a plasma hand torch, comprising: a torch handle; an anode body at least partially located within the torch handle; a cathode body extending axially within the anode body; an electrode electrically connected to the cathode body at a distal portion of the cathode body; an electrical power terminal attached to the cathode body at a proximal portion of the cathode body within the torch handle; a bias member that applies a bias force to the cathode body in a distal direction; an electrical isolator mounted atop the anode body and at least partially surrounding the cathode body within the torch handle, wherein the electrical isolator limits axial movement of the cathode body and the electrical power terminal in a distal direction; and a cap-in-place limit switch attached to the electrical isolator within the torch handle. Simek teaches a cap-in-place limit switch within the torch handle. The closest prior art fails to disclose or suggest the cap-in-place limit switch attached to the electrical isolator within the torch handle. Claims 18-22 depend upon claim 17 and so are allowable. Pertinent Prior Art The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Severance (US 6,362,450) discloses a plasma arc torch. Contact Information Any inquiry concerning this communication or earlier communications from the examiner should be directed to DANIELLE M CHRISTENSEN whose telephone number is (571)270-3275. The examiner can normally be reached M-F 9-5 PM. 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, Courtney Heinle can be reached at 571-270-3508. 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. /Danielle M. Christensen/Examiner, Art Unit 3745 1
Read full office action

Prosecution Timeline

Apr 25, 2023
Application Filed
Jan 10, 2026
Non-Final Rejection — §112 (current)

Precedent Cases

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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
79%
Grant Probability
90%
With Interview (+11.1%)
2y 9m
Median Time to Grant
Low
PTA Risk
Based on 628 resolved cases by this examiner. Grant probability derived from career allow rate.

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