Prosecution Insights
Last updated: April 19, 2026
Application No. 17/753,189

TROCAR AND STYLET STABILIZER

Non-Final OA §112
Filed
Feb 23, 2022
Examiner
DARB, HAMZA A.
Art Unit
3783
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
The Johns Hopkins University
OA Round
3 (Non-Final)
75%
Grant Probability
Favorable
3-4
OA Rounds
3y 5m
To Grant
99%
With Interview

Examiner Intelligence

Grants 75% — above average
75%
Career Allow Rate
390 granted / 521 resolved
+4.9% vs TC avg
Strong +31% interview lift
Without
With
+31.4%
Interview Lift
resolved cases with interview
Typical timeline
3y 5m
Avg Prosecution
79 currently pending
Career history
600
Total Applications
across all art units

Statute-Specific Performance

§101
0.4%
-39.6% vs TC avg
§103
46.2%
+6.2% vs TC avg
§102
22.6%
-17.4% vs TC avg
§112
22.4%
-17.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 521 resolved cases

Office Action

§112
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 . Continued Examination Under 37 CFR 1.114 A request for continued examination under 37 CFR 1.114, including the fee set forth in 37 CFR 1.17(e), was filed in this application after final rejection. Since this application is eligible for continued examination under 37 CFR 1.114, and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114. Applicant's submission filed on 12/8/2025 has been entered. Acknowledgment Claims 1-34, 39-41 are amended and field on 12/8/2025. Claims 42-57 are newly added. 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 45-57 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 45 recites the limitation "wherein a radiological image is generated to determine if the trocar and the stylet are inserted at a correct trajectory, wherein the trocar and the stylet are advanced into the patient's body at the entry point based on determining that the trocar and the stylet are inserted at the correct trajectory, wherein the stylet is removed from the trocar based on advancing the trocar and the stylet into the patient's body, wherein a biopsy tool is inserted into the trocar, wherein a biopsy is performed using the biopsy tool, wherein the biopsy tool is removed from the trocar and reinserting the stylet into the trocar; and wherein the trocar and the stylet are removed from the patient's body through the stabilizer" in the last 13 lines. The claim is device/system’s claim but these are a method steps so the claim is unclear as it is not directed to the device/system. See MPEP 2173.05(p). Note: the examiner suggests to amend the claim such as "wherein the system is configured to be use with a biopsy procedure, the biopsy procedure is comprising : a radiological image is generated to determine if the trocar and the stylet are inserted at a correct trajectory, wherein the trocar and the stylet are advanced into the patient's body at the entry point based on determining that the trocar and the stylet are inserted at the correct trajectory, wherein the stylet is removed from the trocar based on advancing the trocar and the stylet into the patient's body, wherein a biopsy tool is inserted into the trocar, wherein a biopsy is performed using the biopsy tool, wherein the biopsy tool is removed from the trocar and reinserting the stylet into the trocar; and wherein the trocar and the stylet are removed from the patient's body through the stabilizer". Claim 52 recites the limitation " wherein a radiological image is generated to determine if the trocar and the stylet are inserted at a correct trajectory, wherein the trocar and the stylet are advanced into the patient's body at the entry point based on determining that the trocar and the stylet are inserted at the correct trajectory, wherein the stylet is removed from the trocar based on advancing the trocar and the stylet into the patient's body, wherein a biopsy tool is inserted into the trocar, wherein a biopsy is performed using the biopsy tool, wherein the biopsy tool is removed from the trocar and reinserting the stylet into the trocar; and wherein the trocar and the stylet are removed from the patient's body through the stabilizer" in the last 13 lines. The claim is device/system’s claim but these are a method steps so the claim is unclear as it is not directed to the device/system. See MPEP 2173.05(p). Note: the examiner suggests to amend the claim such as "wherein the device is configured to be use with a biopsy procedure, the biopsy procedure is comprising : a radiological image is generated to determine if the trocar and the stylet are inserted at a correct trajectory, wherein the trocar and the stylet are advanced into the patient's body at the entry point based on determining that the trocar and the stylet are inserted at the correct trajectory, wherein the stylet is removed from the trocar based on advancing the trocar and the stylet into the patient's body, wherein a biopsy tool is inserted into the trocar, wherein a biopsy is performed using the biopsy tool, wherein the biopsy tool is removed from the trocar and reinserting the stylet into the trocar; and wherein the trocar and the stylet are removed from the patient's body through the stabilizer". Allowable Subject Matter Claims 45, 52 would be allowable if rewritten or amended 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. Claims 35-38, 42-44 are allowed. The following is a statement of reasons for the indication of allowable subject matter: Re Claim 35, a method, comprising: placing a stabilizer over an entry point in a patient's body; inserting a trocar and a stylet into the stabilizer, wherein the stabilizer comprises: a main portion through which the trocar and the stylet is inserted; and a plurality of stabilizing portions of the stabilizer, wherein the plurality of stabilizing portions are configured to be removable from the main portion based on at least one of perforated sections or lines between the main portion and the plurality of stabilizing portions, and advancing the trocar and the stylet into the patient's body at the entry point based on determining that the trocar and the stylet are inserted at the correct trajectory; removing the stylet from the trocar based on advancing the trocar and the stylet into the patient's body; inserting a biopsy tool into the trocar; performing a biopsy using the biopsy tool; removing the biopsy tool from the trocar and reinserting the stylet into the trocar; and removing the trocar and the stylet from the patient's body through the stabilizer in combination with other claimed structure was not found or rendered obvious by the prior art of record.. In particular, Gross in view of Chesbrough is the closest prior art of record. Even though Gross in view of Chesbrough a method, comprising: placing a stabilizer over an entry point in a patient's body; inserting a trocar and a stylet into the stabilizer, wherein the stabilizer comprises: a main portion through which the trocar and the stylet is inserted; and a plurality of stabilizing portions of the stabilizer, wherein the plurality of stabilizing portions are configured to be removable from the main portion based on at least one of perforated sections or lines between the main portion and the plurality of stabilizing portions, but it fails to disclose advancing the trocar and the stylet into the patient's body at the entry point based on determining that the trocar and the stylet are inserted at the correct trajectory; removing the stylet from the trocar based on advancing the trocar and the stylet into the patient's body; inserting a biopsy tool into the trocar; performing a biopsy using the biopsy tool; removing the biopsy tool from the trocar and reinserting the stylet into the trocar; and removing the trocar and the stylet from the patient's body through the stabilizer. 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.” Response to Arguments Applicant’s arguments filed on 12/8/2025 with respect to claim(s) 45, 52 have been considered and persuasive. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to HAMZA A. DARB whose telephone number is (571)270-1202. The examiner can normally be reached 8:00-5:00 M-F (EST). 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, Chelsea Stinson can be reached at (571) 270-1744. 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. /HAMZA A DARB/Examiner, Art Unit 3783 /CHELSEA E STINSON/Supervisory Patent Examiner, Art Unit 3783
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Prosecution Timeline

Feb 23, 2022
Application Filed
Feb 26, 2025
Non-Final Rejection — §112
Jun 05, 2025
Interview Requested
Jun 12, 2025
Applicant Interview (Telephonic)
Jun 13, 2025
Examiner Interview Summary
Jun 20, 2025
Response Filed
Sep 04, 2025
Final Rejection — §112
Nov 12, 2025
Examiner Interview Summary
Nov 12, 2025
Applicant Interview (Telephonic)
Dec 08, 2025
Request for Continued Examination
Dec 21, 2025
Response after Non-Final Action
Jan 09, 2026
Non-Final Rejection — §112 (current)

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Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

3-4
Expected OA Rounds
75%
Grant Probability
99%
With Interview (+31.4%)
3y 5m
Median Time to Grant
High
PTA Risk
Based on 521 resolved cases by this examiner. Grant probability derived from career allow rate.

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