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

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

Non-Final OA §103
Filed
May 29, 2024
Examiner
SALVATORE, LYNDA
Art Unit
1789
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Kolon Industries Inc.
OA Round
1 (Non-Final)
64%
Grant Probability
Moderate
1-2
OA Rounds
3y 6m
To Grant
83%
With Interview

Examiner Intelligence

Grants 64% of resolved cases
64%
Career Allow Rate
627 granted / 983 resolved
-1.2% vs TC avg
Strong +20% interview lift
Without
With
+19.6%
Interview Lift
resolved cases with interview
Typical timeline
3y 6m
Avg Prosecution
62 currently pending
Career history
1045
Total Applications
across all art units

Statute-Specific Performance

§101
0.1%
-39.9% vs TC avg
§103
49.6%
+9.6% vs TC avg
§102
21.1%
-18.9% vs TC avg
§112
16.6%
-23.4% vs TC avg
Black line = Tech Center average estimate • Based on career data from 983 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 . Claim Rejections - 35 USC § 103 1. 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. 2. Claims 1-11 is/are rejected under 35 U.S.C. 103 as being obvious over KR 20200002119 A in view of US 20040121150 A1. 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). The published KR document teach that the yarn may have a non-circular cross section but does not teach the claimed protrusions. 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). 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. Therefore, motivated by the desire to produce a fabric that can absorb sweat and have quick drying properties (e.g., wicking properties) it would have been obvious to one of ordinary skill in the art at the time the invention was made to form the polyethylene polymer taught and disclosed in the published KR document into multi-lobal filaments as taught by Johnson et al. With regard to claims 7-10, 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. In re Fitzgerald 205 USPQ 594 In addition, the presently claimed cooling sensation, heat flux, moisture absorption and/or drying rate properties would obviously have been present once the fabric of the combination of prior art is provided. In re Best, 195 UPSQ 433 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 3. 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 06, 2026
Non-Final Rejection — §103
Apr 03, 2026
Response Filed

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12595595
PHOTOCHROMIC LIQUID CRYSTAL ELECTROSPUN COAXIAL POLYMER FIBERS
2y 5m to grant Granted Apr 07, 2026
Patent 12583191
RESIN FORMED ARTICLE AND METHOD FOR PRODUCING RESIN FORMED ARTICLE
2y 5m to grant Granted Mar 24, 2026
Patent 12583530
CONSTRUCTION OF A VEHICLE FLOOR GARNISH
2y 5m to grant Granted Mar 24, 2026
Patent 12564658
TISSUE SUBSTITUTE MATERIALS AND METHODS FOR TISSUE REPAIR
2y 5m to grant Granted Mar 03, 2026
Patent 12558866
LINER FOR UPHOLSTERED FURNITURE
2y 5m to grant Granted Feb 24, 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
64%
Grant Probability
83%
With Interview (+19.6%)
3y 6m
Median Time to Grant
Low
PTA Risk
Based on 983 resolved cases by this examiner. Grant probability derived from career allow rate.

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