Prosecution Insights
Last updated: October 21, 2026
Application No. 18/915,635

IMPLANTABLE NANOCHANNEL DELIVERY DEVICES

Non-Final OA §DOUBLEPATENT
Filed
Oct 15, 2024
Priority
May 15, 2015 — provisional 62/161,986 +4 more
Examiner
TRUONG, QUANGLONG N
Art Unit
1615
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
The Methodist Hospital System
OA Round
2 (Non-Final)
79%
Grant Probability
Favorable
2-3
OA Rounds
2m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 79% — above average
79%
Career Allowance Rate
518 granted / 659 resolved
+18.6% vs TC avg
Strong +23% interview lift
Without
With
+23.3%
Interview Lift
resolved cases with interview
Typical timeline
2y 3m
Avg Prosecution
52 currently pending
Career history
717
Total Applications
across all art units

Statute-Specific Performance

§101
4.2%
-35.8% vs TC avg
§103
55.1%
+15.1% vs TC avg
§102
11.1%
-28.9% vs TC avg
§112
18.4%
-21.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 659 resolved cases

Office Action

§DOUBLEPATENT
DETAILED ACTION Status of Application Receipt of the Claim set filed 7/30/2026, is acknowledged. Claims 20-21 are newly added. Claim 8 is cancelled. Claims 1-7 and 9-21 are pending and currently under consideration. 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to Amendments/Arguments The amendments are sufficient to overcome the objection to the specification, which is now withdrawn. The amendment to claim 13 is sufficient to overcome the 35 112(b) rejection which is now withdrawn. The amendments to claims 1 and 14 along with the arguments are sufficient to overcome the previous rejections under 35 USC 103 which are now withdrawn. The claims are free of the art. Double Patenting The nonstatutory double patenting rejection is based on a judicially created doctrine grounded in public policy (a policy reflected in the statute) so as to prevent the unjustified or improper timewise extension of the “right to exclude” granted by a patent and to prevent possible harassment by multiple assignees. A nonstatutory double patenting rejection is appropriate where the claims at issue are not identical, but at least one examined application claim is not patentably distinct from the reference claim(s) because the examined application claim is either anticipated by, or would have been obvious over, the reference claim(s). See, e.g., In re Berg, 140 F.3d 1428, 46 USPQ2d 1226 (Fed. Cir. 1998); In re Goodman, 11 F.3d 1046, 29 USPQ2d 2010 (Fed. Cir. 1993); In re Longi, 759 F.2d 887, 225 USPQ 645 (Fed. Cir. 1985); In re Van Ornum, 686 F.2d 937, 214 USPQ 761 (CCPA 1982); In re Vogel, 422 F.2d 438, 164 USPQ 619 (CCPA 1970); and In re Thorington, 418 F.2d 528, 163 USPQ 644 (CCPA 1969). A timely filed terminal disclaimer in compliance with 37 CFR 1.321(c) or 1.321(d) may be used to overcome an actual or provisional rejection based on a nonstatutory double patenting ground provided the reference application or patent either is shown to be commonly owned with this application, or claims an invention made as a result of activities undertaken within the scope of a joint research agreement. A terminal disclaimer must be signed in compliance with 37 CFR 1.321(b). The USPTO internet Web site contains terminal disclaimer forms which may be used. Please visit http://www.uspto.gov/forms/. The filing date of the application will determine what form should be used. A web-based eTerminal Disclaimer may be filled out completely online using web-screens. An eTerminal Disclaimer that meets all requirements is auto-processed and approved immediately upon submission. For more information about eTerminal Disclaimers, refer to http://www.uspto.gov/patents/process/file/efs/guidance/eTD-info-I.jsp. Claims 1-7, and 9-21 are rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1-17 of US Patent 11,590,072 B2. Although the claims at issue are not identical, they are not patentably distinct from each other because instant claim 1 requires an implantable device, comprising: a tubular body defining a first opening and a reservoir, and a nanochanneled membrane disposed within the first opening, wherein the tubular body has a length of less than 5 mm. However, claim 1 of the ‘072 patent is obvious over the device of instant claim 1 as they both have the same components because claim 1 of the ‘072 patent requires an implantable fiducial marker device, comprising: a tubular body made of a radiopaque material, with a length of less than 5 mm, defining a first opening, a reservoir, and a nanochanneled membrane disposed within the first opening. It would have been obvious to one of ordinary skill in the art, before the effective filing date of the claimed invention, to have arrived at the claimed system. This is a nonstatutory double patenting rejection. Claims 1-7, and 9-21 are rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1-15 of US Patent 12,151,021 B2. Although the claims at issue are not identical, they are not patentably distinct from each other because instant claim 1 requires an implantable device, comprising: a tubular body defining a first opening and a reservoir, and a nanochanneled membrane disposed within the first opening, wherein the tubular body has a length of less than 5 mm. However, claim 1 of the ‘021 patent is obvious over the device of instant claim 1 as they both have the same components because claim 1 of the ‘021 patent requires implantable fiducial marker device, comprising: a tubular body made of a radiopaque material, with a length of less than 5 mm, defining a first opening, a reservoir, and a nanochanneled membrane disposed within the first opening. It would have been obvious to one of ordinary skill in the art, before the effective filing date of the claimed invention, to have arrived at the claimed system. This is a nonstatutory double patenting rejection. Conclusion No claims are allowed. Any inquiry concerning this communication or earlier communications from the examiner should be directed to QUANGLONG N TRUONG whose telephone number is (571)270-0719. The examiner can normally be reached on 8:00 am-5:00 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, Robert A Wax can be reached on 571-272-0623. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of an application may be obtained from the Patent Application Information Retrieval (PAIR) system. Status information for published applications may be obtained from either Private PAIR or Public PAIR. Status information for unpublished applications is available through Private PAIR only. For more information about the PAIR system, see http://pair-direct.uspto.gov. Should you have questions on access to the Private PAIR system, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative or access to the automated information system, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /QUANGLONG N TRUONG/Examiner, Art Unit 1615
Read full office action

Prosecution Timeline

Oct 15, 2024
Application Filed
May 01, 2026
Non-Final Rejection mailed — §DOUBLEPATENT
Jul 30, 2026
Response Filed
Oct 14, 2026
Non-Final Rejection mailed — §DOUBLEPATENT (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

2-3
Expected OA Rounds
79%
Grant Probability
99%
With Interview (+23.3%)
2y 3m (~2m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 659 resolved cases by this examiner. Grant probability derived from career allowance rate.

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