Prosecution Insights
Last updated: October 02, 2026
Application No. 18/714,121

SHAPED CROSS-SECTIONAL POLYETHYLENE YARN AND FUNCTIONAL FABRIC INCLUDING THE SAME

Final Rejection §103
Filed
May 29, 2024
Priority
Dec 20, 2021 — RE 10-2021-0182731 +2 more
Examiner
SALVATORE, LYNDA
Art Unit
1789
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Kolon Industries Inc.
OA Round
2 (Final)
64%
Grant Probability
Moderate
3-4
OA Rounds
1y 2m
Est. Remaining
84%
With Interview

Examiner Intelligence

Grants 64% of resolved cases
64%
Career Allowance Rate
650 granted / 1014 resolved
-0.9% vs TC avg
Strong +19% interview lift
Without
With
+19.4%
Interview Lift
resolved cases with interview
Typical timeline
3y 6m
Avg Prosecution
37 currently pending
Career history
1063
Total Applications
across all art units

Statute-Specific Performance

§101
0.6%
-39.4% vs TC avg
§103
54.0%
+14.0% vs TC avg
§102
17.9%
-22.1% vs TC avg
§112
14.4%
-25.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1014 resolved cases

Office Action

§103
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 1. Applicant’s amendments and accompanying remarks filed 4/3/26 have been fully considered and entered. Claims 1, 6 and 8 have been amended. Claims 2, 7 and 10 have been canceled. Applicant’s arguments with respect to the rejection(s) of claim(s) 1, 3-6, 8-9 and 11 made under KR 20200002119 A in view of US 20040121150 A1 issued to Johnson et al., have been fully considered and are persuasive. Therefore, the rejection has been withdrawn. However, upon further consideration, a new ground(s) of rejection is made under US 20040121150 A1 issued to Johnson et al., in view of KR 20200002119 A. Claim Rejections - 35 USC § 103 2. 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. 3. Claims 1, 3-6, 8-9 and 11 is/are rejected under 35 U.S.C. 103 as being obvious over US 20040121150 A1 issued to Johnson et al., in view of KR 20200002119 A. The published patent application issued to Johnson et al., teach forming multi-filament yarns and fabrics from multi-lobal filaments having in inner radius and outer radius as set forth in claim 2 (see figure 1, 1a,1b and 1c and paragraphs 0009, 0032). With specific regard to the claimed shape ratio (R2/R1 of 1.2 to 5.0), Johnson et al., disclose that the filament has an inner ratio and outer ratio but fails to explicitly teach the claimed ratio; however, it would be within the skill of ordinary worker in the art to optimize the shape ratio as function of desired wicking and absorbing properties. Absent a clear and convincing showing of unexpected results demonstrating the criticality of the claimed shape ratio range, it would have been obvious to one of ordinary skill in the art to optimize this result-effective variable by routine experimentation. In re Antonie, 559 F.2d 618, 195 USPQ 6 (CCPA 1977). Said multi-lobal filaments can be made from polyolefins such as polyethylene (paragraph 0041). The Examiner is of the position that the lobes as shown in figures 1 and 1a-1c meet the limitations of the claimed protrusions. Said multi-lobal filaments further exhibit moisture transport/wicking properties (paragraph 0060). Johnson et al., specifically teach that wicking refers to the capillary movement of water through or along the fibers. The ability of the fibers to wick, therefore, increases the ability of the fabric to absorb water and move it away from the body. It has been particularly found that the fabrics using microfibers of the present invention have higher wicking rates than fabric of round microfibers of comparable dpf (paragraph 0065). The Examiner is of the position that the multi-lobal fibers of Johnson et al., would have the properties of “sweat absorbing and quick drying” as set forth in claim 11. Johnson et al., teach that the multi-lobal fibers and yarns can be made from polyethylene. Johnson et al., fails to teach the claimed polyethylene. The published KR document teach a cooling fabric which can provide a user with cooling effects or coldness as well as soft texture. The published KR document further teach a polyethylene yarn for the same, and a manufacturing method thereof. Said cooling fabric comprises: a plurality of wefts; and a plurality of warps, each of the wefts and warps has tensile strength of 3.5-8.5 g/de, tensile modulus of 15-80 g/de, break elongation of 14-55%, and crystallinity of 55-85% (see abstract). The published KR document further teach polydispersity Index (PDI) is 5.5 to 9 (see description). The published KR document teach that the polyethylene yarn may have a circular cross section or a non-circular cross section (see description). The published KR document teach that the polyethylene is a high-density polyethylene (HDPE) having a density of 0.941 to 0.965 g / cm .sup.3 (see description). The published KR document further teach that the HDPE may have a Melt Index (MI) of 1 to 25 g / 10min at 190° C (see description). Therefore, motivated by the desire to produce a wicking/moisture absorbing performance apparel fabric that also exhibits cooling effects and has a soft texture it would have been obvious to one of ordinary skill in the art at the time the invention was made to form the polyethylene multi-lobal fibers and yarns of Johnson et al., with the specific polyethylene taught and disclosed in the published KR document. Johnson et al., specifically teach forming performance type fabrics (paragraph 0051). The Examiner is of the position that a worker of ordinary skill in the art would be motivated to form/provide performance apparel that also exhibits cooling effects and has a soft texture. With regard to claims 6 and 8-9, the combination of the cited prior art does not specifically teach the claimed cooling sensation, heat flux, moisture absorption and/or drying rate. However, it is reasonable to expect that the claimed cooling sensation, heat flux, moisture absorption and/or drying rate properties would be exhibited once the fabric of the combination of prior art is provided. Support for said presumption is found in the use of like materials such as the claimed polyethylene polymer and the use of like processes such as manufacturing multi-lobal filaments, yarns and fabrics which would result in the claimed cooling sensation, heat flux, moisture absorption and/or drying rate features. The burden is shifted to Applicant to prove otherwise. The Patent and Trademark Office can require applicants to prove that prior art products do not necessarily or inherently possess characteristics of claimed products where claimed and prior art products are identical or substantially identical, or are produced by identical or substantially identical processes; burden of proof is on applicants where rejection based on inherency under 35 U.S.C. § 102 or on prima facie obviousness under 35 U.S.C. § 103, jointly or alternatively, and Patent and Trademark Office’s inability to manufacture products or to obtain and compare prior art products evidences fairness of this rejection, In re Best, Bolton, and Shaw, 195 USPQ 431 (CCPA 1977). Conclusion 4. THIS ACTION IS MADE FINAL. Applicant is reminded of the extension of time policy as set forth in 37 CFR 1.136(a). A shortened statutory period for reply to this final action is set to expire THREE MONTHS from the mailing date of this action. In the event a first reply is filed within TWO MONTHS of the mailing date of this final action and the advisory action is not mailed until after the end of the THREE-MONTH shortened statutory period, then the shortened statutory period will expire on the date the advisory action is mailed, and any nonprovisional extension fee (37 CFR 1.17(a)) pursuant to 37 CFR 1.136(a) will be calculated from the mailing date of the advisory action. In no event, however, will the statutory period for reply expire later than SIX MONTHS from the mailing date of this final action. Any inquiry concerning this communication or earlier communications from the examiner should be directed to LYNDA SALVATORE whose telephone number is (571)272-1482. The examiner can normally be reached M-F. 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, Marla McConnell can be reached at 571-270-7692. 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. /LYNDA SALVATORE/Primary Examiner, Art Unit 1789
Read full office action

Prosecution Timeline

May 29, 2024
Application Filed
Jan 09, 2026
Non-Final Rejection mailed — §103
Apr 03, 2026
Response Filed
Aug 06, 2026
Final Rejection mailed — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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SLIDING MEMBER
2y 6m to grant Granted Sep 29, 2026
Patent 12728618
CARBON NANOTUBE BASED SENSOR
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Patent 12729467
USE OF LYOCELL FIBERS
3y 7m to grant Granted Sep 08, 2026
Patent 12723336
METHOD FOR THE CONTINUOUS PRODUCTION OF NONWOVEN FABRIC, AND ASSOCIATED NONWOVEN FABRIC PRODUCTION APPARATUS AND NONWOVEN BOARD
3y 8m to grant Granted Sep 01, 2026
Patent 12715047
INSERT AND CUTTING TOOL PROVIDED THEREWITH
3y 11m to grant Granted Aug 25, 2026
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
64%
Grant Probability
84%
With Interview (+19.4%)
3y 6m (~1y 2m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 1014 resolved cases by this examiner. Grant probability derived from career allowance rate.

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