Prosecution Insights
Last updated: September 17, 2026
Application No. 17/355,620

COLONOSCOPY AUXILIARY DEVICE

Non-Final OA §102
Filed
Jun 23, 2021
Examiner
NGUYEN, CAMTU TRAN
Art Unit
3786
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Brian Sehoon Lim
OA Round
3 (Non-Final)
63%
Grant Probability
Moderate
3-4
OA Rounds
0m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 63% of resolved cases
63%
Career Allowance Rate
547 granted / 866 resolved
-6.8% vs TC avg
Strong +38% interview lift
Without
With
+38.5%
Interview Lift
resolved cases with interview
Typical timeline
3y 7m
Avg Prosecution
22 currently pending
Career history
886
Total Applications
across all art units

Statute-Specific Performance

§101
5.0%
-35.0% vs TC avg
§103
42.6%
+2.6% vs TC avg
§102
18.1%
-21.9% vs TC avg
§112
28.2%
-11.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 866 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 . Response to Amendment This Office Action is responding to applicant’s amendment filed on 6/12/2026. Response to Arguments The objections to the drawings have been withdrawn in view of applicant’s remarks. The 112 rejections have been withdrawn in view of applicant’s remarks. 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. Claims 1-2, 5, 7, 15-16, and 18 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Jessamine (U.S. Patent No. 4,903,710). Regarding independent claim 1, Figure 1 discloses applicant’s claimed colonoscopy auxiliary device, comprising: a foldable shield portion (10) provided with a colo-examination aperture (28); and a first adhesive strip (left strip 13 on Figure 1) disposed on a first edge (left edge 12) of the foldable shield portion (10); and a flat (41, Figures 9-11) configured to cover the colo-examination aperture (28); wherein the flap (41) is fixed (42) rotatably on the foldable shield portion to cover and expose the colo-examination aperture (28) alternatively (flap 41 is fully capable of covering/exposing aperture 28 prior to installing of lens 40 thereon). Regarding claim 2, Jessamine reference, presented above, discloses applicant’s claimed colonoscopy auxiliary device according to claim 1, further comprising a second adhesive strip (left strip 14 on Figure 1) disposed on a second edge (upward rising edge from left edge 12) of the foldable shield portion (10), wherein the second adhesive strip (left strip 14) intersects with the first adhesive strip (left strip 13). Regarding claim 5, Jessamine reference, presented above, discloses applicant’s claimed colonoscopy auxiliary device according to claim 1, wherein an area surrounding the colo-examination aperture (28) is thicker (Figure 6 illustrates aperture 28 is surrounded by ring 32 which thickens the surrounding area of aperture 28) than another portion of the foldable shield portion (10); wherein the area surrounding the colo-examination aperture has a multiple-layer structure (Figure 6 illustrates surrounding area includes added ring 32 rendering the surrounding area having multiple-layer structure). Regarding claim 7, Jessamine reference, presented above, discloses applicant’s claimed colonoscopy auxiliary device according to claim 1, further comprising a handle element (Figures 9-10 illustrates flap 41 having cut 43 resulting in 3 tabs which functions as a grip), wherein the handle element (1 of 3 tabs) is disposed on an upper surface of the flap for moving the flap to cover or expose the colo-examination aperture (28). Regarding claim 15, Jessamine reference, presented above, discloses applicant’s claimed colonoscopy auxiliary device according to claim 1, wherein two third tapes (1st third tape 14 on left side of sheet 10, 2nd third tape 14 on right side of sheet 10) are disposed on a second edge (left vertical edge where 1st third tape 14 is) and an edge (right vertical edge where 2nd third tape is, such right vertical edge is opposite second edge) opposite to the second edge, respectively. Regarding claim 16, Jessamine reference, presented above, discloses applicant’s claimed colonoscopy auxiliary device according to claim 1, wherein at least one fourth tape (right strip 13 on Figure 1) is disposed on an edge (right edge 12) of the foldable shield portion opposite to the first edge (left edge 12). Regarding claim 18, Jessamine reference, presented above, discloses applicant’s claimed colonoscopy auxiliary device according to claim 1, wherein the foldable shield portion (10) comprises a colo-examination area (an area surrounding aperture 28 on the sheet 10 in interpreted to corresponding to claimed limitations colo-examination area) , wherein the colo-examination aperture (28) is disposed in the colo-examination area, and at least the colo-examination area of the foldable shield portion is transparent (column 1 lines 50-54). Allowable Subject Matter Claims 3-4, 9-14, 17, and 19 are objected to as being dependent upon a rejected base claim, but would be allowable if rewritten in independent form including all of the limitations of the base claim and any intervening claims. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to CAMTU TRAN NGUYEN whose telephone number is (571)272-4799. The examiner can normally be reached 9am-5pm, Monday-Friday. 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, Rachael E Bredefeld can be reached at 571-270-5237. 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. /CAMTU T NGUYEN/Examiner, Art Unit 3786
Read full office action

Prosecution Timeline

Show 1 earlier event
Dec 22, 2023
Non-Final Rejection mailed — §102
Mar 21, 2024
Response Filed
Jul 16, 2024
Non-Final Rejection mailed — §102
Oct 15, 2024
Response Filed
Oct 15, 2024
Response after Non-Final Action
May 26, 2026
Response after Non-Final Action
Jun 12, 2026
Response Filed
Aug 20, 2026
Non-Final Rejection mailed — §102 (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

3-4
Expected OA Rounds
63%
Grant Probability
99%
With Interview (+38.5%)
3y 7m (~0m remaining)
Median Time to Grant
High
PTA Risk
Based on 866 resolved cases by this examiner. Grant probability derived from career allowance rate.

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