Prosecution Insights
Last updated: April 19, 2026
Application No. 18/590,164

LOW STATIC DISCHARGE NON-BLOCKING MULTILAYER BARRIER FILM

Non-Final OA §103
Filed
Feb 28, 2024
Examiner
SHEWAREGED, BETELHEM
Art Unit
1785
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Taghleef Industries Inc.
OA Round
2 (Non-Final)
72%
Grant Probability
Favorable
2-3
OA Rounds
2y 8m
To Grant
80%
With Interview

Examiner Intelligence

Grants 72% — above average
72%
Career Allow Rate
720 granted / 1007 resolved
+6.5% vs TC avg
Moderate +8% lift
Without
With
+8.4%
Interview Lift
resolved cases with interview
Typical timeline
2y 8m
Avg Prosecution
44 currently pending
Career history
1051
Total Applications
across all art units

Statute-Specific Performance

§103
61.2%
+21.2% vs TC avg
§102
22.4%
-17.6% vs TC avg
§112
7.7%
-32.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1007 resolved cases

Office Action

§103
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 § 103 The following is a quotation of 35 U.S.C. 103 which forms the basis for all obviousness rejections set forth in this Office action: A patent for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102, if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains. Patentability shall not be negated by the manner in which the invention was made. Claims 1, 2 and 4-15 are rejected under 35 U.S.C. 103 as being unpatentable over Sundararaman et al. (US 2019/0225001 A1). Claims 1, 2 and 11-14: Sundararaman teaches a biaxially oriented film [0051] comprising a base film having a first side and a print receptive coating on the second side (abstract), wherein the base film includes skin, tie and/or core layers [0059]. Sundararaman teaches the core layer comprises polypropylene {instant claim 2} [0015]. Sundararaman teaches the skin layer on both sides of the core layer [0026], and tie layer between the core and the skin layer because the tie layer is used to connect two other layers [0022]. Sundararaman teaches the metallized layer also termed as metallizable skin layer is to improve barrier properties [0028] and comprises a polyamide polymer [0029]. So far, the oriented film has a structure of: metallized layer/skin layer/tie layer/core layer/tie layer/skin layer/print receptive coating; and the metallized layer meets the claimed barrier layer and the core layer meets the claimed core layer. Sundararaman teaches intermediate primers to provide an overall adhesively active surface for thorough and secure bonding with the subsequently applied coating composition [0048]. Sundararaman teaches the primers comprise polyurethane material [0048]. It is interpreted that the primers can be formed on the metallized layer and/or the tie layer forming the following structure: primer/metallized layer/skin layer/tie layer/core layer/tie layer/skin layer/primer/print receptive coating; and the primer on the metallized layer meets the claimed adhesive receptive layer and the primer on the skin layer meets the claimed printable coating layer. With respect to the claimed {instant claim 11} MFFT and static buildup {instant claims 13 and 14} of the polyurethane in both the printable coating layer and the adhesive receptive layer, the experimental modification of this prior art in order to ascertain optimum operating conditions fails to render applicants’ claims patentable in the absence of unexpected results. In re Aller, 105 USPQ 233. One of ordinary skill in the art would have been motivated to adjust the MFFT values of the polyurethanes, and the motivation would be to control the layer’s properties including cracking, smoothness and cohesiveness while reducing static buildup. A prima facie case of obviousness may be rebutted, however, where the results of the optimizing variable, which is known to be result-effective, are unexpectedly good. In re Boesch and Slaney, 205 USPQ 215. With respect to the claimed blocking force {instant claim 12}, the experimental modification of this prior art in order to ascertain optimum operating conditions fails to render applicants’ claims patentable in the absence of unexpected results. In re Aller, 105 USPQ 233. One of ordinary skill in the art would have been motivated to adjust the blocking force of the oriented film so as to control the integrity of the film. A prima facie case of obviousness may be rebutted, however, where the results of the optimizing variable, which is known to be result-effective, are unexpectedly good. In re Boesch and Slaney, 205 USPQ 215. Claims 4 and 5: Based on the film structure above in paragraph 5 (primer/metallized layer/skin layer/tie layer/core layer/tie layer/skin layer/primer/print receptive coating); the skin layer between the tie layer and the primer layer meets the claimed printable coating receptive layer. Sundararaman teaches the skin layer comprises propylene homopolymers and propylene copolymers {instant claim 5} [0026]. Claims 6-8: Based on the film structure above in paragraph 5 (primer/metallized layer/skin layer/tie layer/core layer/tie layer/skin layer/primer/print receptive coating); the tie layers meet the claimed tie layers. Sundararaman teaches the tie layers comprise C3 polymers and/or ethylene vinyl acetate [0023]. Claim 9: With respect to the claimed viscosity of barrier layer (metallized layer), the experimental modification of this prior art in order to ascertain optimum operating conditions fails to render applicants’ claims patentable in the absence of unexpected results. In re Aller, 105 USPQ 233. One of ordinary skill in the art would have been motivated to adjust viscosity, and the motivation would be to control processability. A prima facie case of obviousness may be rebutted, however, where the results of the optimizing variable, which is known to be result-effective, are unexpectedly good. In re Boesch and Slaney, 205 USPQ 215. Claim 10: Sundararaman does not teach the primer/adhesive receptive layer comprises a colorant. However, it would have been obvious to one having ordinary skill in the art before the effective filing date of the invention to add a colorant in the layer so as to change the color of the layer or the film to a desired color because such knowledge is commonly known. Claim 15: Sundararaman teaches the oriented film can be used for labeling [0058] and its surface is receptive to printing inks [0041]. Allowable Subject Matter Claim 3 is 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. Correspondence Any inquiry concerning this communication or earlier communications from the examiner should be directed to BETELHEM SHEWAREGED whose telephone number is (571)272-1529. The examiner can normally be reached Monday -Friday 7am-4:30pm. 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, Mark Ruthkosky can be reached at 571-272-1291. 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. BS September 25, 2025 /BETELHEM SHEWAREGED/ Primary Examiner Art Unit 1785
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Prosecution Timeline

Feb 28, 2024
Application Filed
Sep 25, 2025
Non-Final Rejection — §103
Dec 30, 2025
Response Filed
Apr 09, 2026
Non-Final Rejection — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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RECORDING MATERIAL FOR DYE SUBLIMATION PRINTING HAVING IMPROVED TRANSPORT PROPERTIES
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Patent 12533866
INFRARED ADAPTIVE TRANSPARENT CAMOUFLAGE FILM
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2y 5m to grant Granted Jan 27, 2026
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
72%
Grant Probability
80%
With Interview (+8.4%)
2y 8m
Median Time to Grant
Moderate
PTA Risk
Based on 1007 resolved cases by this examiner. Grant probability derived from career allow rate.

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