Prosecution Insights
Last updated: April 19, 2026
Application No. 18/105,064

ARTICLES COMPRISING FILTER MEDIA WITH IRREGULAR STRUCTURE AND/OR REVERSIBLY STRETCHABLE LAYERS

Non-Final OA §DP
Filed
Feb 02, 2023
Examiner
SHUMATE, ANTHONY R
Art Unit
1773
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Hollingsworth & Vose Company
OA Round
1 (Non-Final)
70%
Grant Probability
Favorable
1-2
OA Rounds
2y 10m
To Grant
84%
With Interview

Examiner Intelligence

Grants 70% — above average
70%
Career Allow Rate
490 granted / 704 resolved
+4.6% vs TC avg
Moderate +14% lift
Without
With
+14.2%
Interview Lift
resolved cases with interview
Typical timeline
2y 10m
Avg Prosecution
21 currently pending
Career history
725
Total Applications
across all art units

Statute-Specific Performance

§101
1.3%
-38.7% vs TC avg
§103
35.7%
-4.3% vs TC avg
§102
27.6%
-12.4% vs TC avg
§112
27.5%
-12.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 704 resolved cases

Office Action

§DP
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 . DETAILED ACTION Summary This is the initial Office action based on the 18105064 application filed 04/12/22 Claim(s) 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19 are pending and claim(s) 1,4,5,6,7,19 have been fully considered Claim(s) 2,3,8,9,10,11,12,13,14,15,16,17,18 have been non-elected/withdrawn Election/Restrictions Applicant’s election of Group I, Species H in the reply filed on 12/23/2025 is acknowledged. Because applicant did not distinctly and specifically point out the supposed errors in the restriction requirement, the election has been treated as an election without traverse (MPEP § 818.03(a)). The ground(s) of “it is believed that a search and an examination of all claims would place no undue burden on the Examiner”, does not distinctly and specifically point out why there is supposedly “believed that a search and an examination of all claims would place no undue burden on the Examiner.” For the sake of argument, this is not found persuasive because based on the additional work involved in searching and examining both distinct inventions together, restriction of the distinct inventions is clearly proper. The requirement is still deemed proper and is therefore made FINAL. Claim(s) 2,3,8,9,10,11,12,13,14,15,16,17,18 withdrawn from further consideration pursuant to 37 CFR 1.142(b) as being drawn to a nonelected invention and/or species, there being no allowable generic or linking claim. 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 conflicting claims 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); 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 nonstatutory double patenting provided the reference application or patent either is shown to be commonly owned with the examined application, or claims an invention made as a result of activities undertaken within the scope of a joint research agreement. See MPEP § 717.02 for applications subject to examination under the first inventor to file provisions of the AIA as explained in MPEP § 2159. See MPEP § 2146 et seq. for applications not subject to examination under the first inventor to file provisions of the AIA . A terminal disclaimer must be signed in compliance with 37 CFR 1.321(b). The filing of a terminal disclaimer by itself is not a complete reply to a nonstatutory double patenting (NSDP) rejection. A complete reply requires that the terminal disclaimer be accompanied by a reply requesting reconsideration of the prior Office action. Even where the NSDP rejection is provisional the reply must be complete. See MPEP § 804, subsection I.B.1. For a reply to a non-final Office action, see 37 CFR 1.111(a). For a reply to final Office action, see 37 CFR 1.113(c). A request for reconsideration while not provided for in 37 CFR 1.113(c) may be filed after final for consideration. See MPEP §§ 706.07(e) and 714.13. The USPTO Internet website contains terminal disclaimer forms which may be used. Please visit www.uspto.gov/patent/patents-forms. The actual filing date of the application in which the form is filed determines what form (e.g., PTO/SB/25, PTO/SB/26, PTO/AIA /25, or PTO/AIA /26) 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 www.uspto.gov/patents/apply/applying-online/eterminal-disclaimer. Claim(s) 1,19 rejected on the ground of nonstatutory double patenting as being unpatentable over claim(s) 2 of U.S. Patent No. 11433332 (herein SMITH332). Although the claims at issue are not identical, they are not patentably distinct from each other because a person of ordinary skill in the art would conclude that the filter media as recited in the patented claim(s) clearly envisages the filtration article of the instant application. Claim(s) 4-6 rejected on the ground of nonstatutory double patenting as being unpatentable over claim 2 of U.S. Patent No. 11433332 (herein SMITH332) in view of U.S. Patent No. 4462399 (herein BRAUN). With regard to claims 4 and 5, SMITH332 does not specifically claim a powered air-purifying respirator But, BRAUN sufficiently teaches a powered air-purifying respirator, especially at the abstract It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention (or at the time the invention was made; if pre-AIA ) to provide powered air-purifying respirator of BRAUN with the filter of SMITH332, for the benefit of a device worn over the mouth or nose or both to protect the respiratory tract from harmful dust With regard to claim 6, SMITH332 claims an air filter (i.e. particulate filtering) Allowable Subject Matter Claim(s) 7 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 ANTHONY R SHUMATE whose telephone number is (571)270-5546. The examiner can normally be reached on M,T,Th,F. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Benjamin Lebron can be reached on (571)272-0475. 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. /ANTHONY SHUMATE/ Primary Examiner, Art Unit 1776
Read full office action

Prosecution Timeline

Feb 02, 2023
Application Filed
Mar 18, 2026
Non-Final Rejection — §DP (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12595431
METHOD AND APPARATUS FOR PURIFYING GAS AND USE
2y 5m to grant Granted Apr 07, 2026
Patent 12589363
CROSSLINKED FACILITATED TRANSPORT MEMBRANE FOR HYDROGEN PURIFICATION FROM COAL-DERIVED SYNGAS
2y 5m to grant Granted Mar 31, 2026
Patent 12589361
APPARATUS FOR ENRICHING THE CONCENTRATION OF TRACE COMPONENTS IN AIR FLOW
2y 5m to grant Granted Mar 31, 2026
Patent 12576368
GAS SEPARATION MEMBRANE, GAS SEPARATION MODULE, GAS SEPARATION APPARATUS, AND POLYIMIDE COMPOUND
2y 5m to grant Granted Mar 17, 2026
Patent 12551854
Membrane Supporting Structures
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
70%
Grant Probability
84%
With Interview (+14.2%)
2y 10m
Median Time to Grant
Low
PTA Risk
Based on 704 resolved cases by this examiner. Grant probability derived from career allow rate.

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