Prosecution Insights
Last updated: April 19, 2026
Application No. 18/406,533

BICYCLE FRONT-END MECHANISM FOR QUICK ASSEMBLY

Non-Final OA §103
Filed
Jan 08, 2024
Examiner
ENGLISH, JAMES A
Art Unit
3614
Tech Center
3600 — Transportation & Electronic Commerce
Assignee
Tianjin Xufeng Sports Equipment Manufacture Co. Ltd.
OA Round
1 (Non-Final)
81%
Grant Probability
Favorable
1-2
OA Rounds
2y 2m
To Grant
90%
With Interview

Examiner Intelligence

Grants 81% — above average
81%
Career Allow Rate
927 granted / 1145 resolved
+29.0% vs TC avg
Moderate +9% lift
Without
With
+9.0%
Interview Lift
resolved cases with interview
Fast prosecutor
2y 2m
Avg Prosecution
20 currently pending
Career history
1165
Total Applications
across all art units

Statute-Specific Performance

§101
0.5%
-39.5% vs TC avg
§103
47.0%
+7.0% vs TC avg
§102
24.2%
-15.8% vs TC avg
§112
24.9%
-15.1% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1145 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 In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status. 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 1-3, 5 and 10 are rejected under 35 U.S.C. 103 as being unpatentable over Lin (US 5,810,380) in view of Callahan et al. (US 2008/0029993). With respect to claim 1, Lin discloses a bicycle front-end mechanism (fig. 2) for quick assembly, comprising: a fork set (3, 30; fig. 2) comprising a tube member (3, 30), the tube member having a connection tube part (30) and a fork part (3); a stem set (1) removably mounted around (fig. 1-2) the tube member (3, 30) of the fork set, the stem set having a stem (Modified fig. 2, below), a connection member (15), a positioning member (12), and a positioning plate (14), the stem having a first combination bore (seen in figs. 1 and 3) and a second combination bore (Mod. Fig. 2), the first combination bore (seen in figs. 1 and 3) mounted around (col. 1, lines 55-63; fig. 3) the connection tube part (30) of the tube member (4), the positioning member (12) and the positioning plate (14) being disposed in (fig. 3) the first combination bore (seen in figs. 1 and 3) in an coaxial arrangement (figs. 1, 3) along a center of the first combination bore (seen in figs. 1 and 3) by the connection member (15), the connection tube part (30) having one end engaged (col. 1, lines 55-63, col. 2, lines 1-14) with the positioning member (12), the second combination bore connected with a handle bar (element 1 is described as a handlebar stem; col. 1, lines 55-63, col. 2, lines 1-14); and a fork bowl set (2, 20, 21, 22) removably mounted around the tube member (3, 30) of the fork set (3, 30; fig. 2), the fork bowl set having a head tube (2), an upper bowl (20), and a lower bowl (Modified fig. 3, below), the head tube (2) mounted around (fig. 2) the connection tube part (30) of the tube member (3, 30), the upper bowl (20) and the lower bowl (Mod. Fig. 3) disposed on two ends (fig. 3; col. 2, lines 19-42) of the head tube (2), respectively, the upper bowl (20) disposed between (fig. 3) the head tube (2) and the stem (Mod fig. 2). (Figs. 1-3, col. 1, lines 7-63, col. 2, lines 1-42.) Lin does not explicitly state that the fork part is connected with a wheel. Callahan et al. teaches of the fork part (80 or 240) is connected with a wheel (15). (Figs. 1-5, paragraphs 3-4, 20, 45.) It would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention to have the structure as described in Callahan et al. into the invention of Lin with a reasonable expectation of success in order to appropriately turn a front wheel. (Paragraph 3.) [AltContent: arrow][AltContent: arrow][AltContent: textbox (Second Combination Bore)][AltContent: textbox (Stem)] PNG media_image1.png 712 508 media_image1.png Greyscale [AltContent: arrow][AltContent: arrow][AltContent: textbox (First End)][AltContent: textbox (Second End)][AltContent: arrow][AltContent: textbox (Lower Bowl)] PNG media_image2.png 768 526 media_image2.png Greyscale With respect to claim 2, Lin, as modified, discloses the fork set further comprises a star nut (10) engaged in one end (fig. 3) of the connection tube part (30), and the connection member (15) of the stem set (1) is connected (fig. 1) with the star nut (10). (Figs. 1-3, col. 1, lines 7-63, col. 2, lines 1-42.) With respect to claim 3, Lin, as modified, discloses the connection tube part (30) comprises a first end (fig. 3, Modified fig. 3 above) and an opposite second end (Mod. fig. 3); the star nut (10) is engaged in the connection tube part (30) at the first end (Mod. fig. 3), and the first end (Mod. fig. 3) is engaged with the positioning member (12). (Figs. 1-3, col. 1, lines 7-63, col. 2, lines 1-42.) With respect to claim 5, Lin, as modified, discloses the stem set (1) further comprises a cap (17) coaxially connected with the positioning member (12) along the center of the first combination bore (seen in figs. 1 and 3) through the connection member (15); the positioning member (12) is disposed between the cap (17) and the positioning plate (14). (Figs. 1-3, col. 1, lines 7-63, col. 2, lines 1-42.) With respect to claim 10, Lin, as modified, discloses the fork bowl set further comprises a washer (21) mounted around an outer periphery (fig. 3) of the connection tube part (30) and disposed between (fig. 3) the upper bowl (20) and the first combination bore (seen in figs. 1 and 3) of the stem (Mod. Fig. 2). (Figs. 1-3, col. 1, lines 7-63, col. 2, lines 1-42.) Claim 4 is rejected under 35 U.S.C. 103 as being unpatentable over Lin and Callahan et al., as applied to claims 1-3 above, and further in view of Tange (DE 101 36 149 A1; Machine Translation of Description ‘MTD’). With respect to claim 4, Lin, as modified, is silent regarding a guide ring. Tange teaches of the fork set comprises a block ring (62) mounted around an outer periphery of the connection tube part (30) and arranged in adjacent to the second end (fig. 4); the lower bowl (64) is connected with the block ring (62). (Figs. 3-4, MTD paragraphs 16-20.) It would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention to have the structure as described in Tange into the invention of Lin, as modified, with a reasonable expectation of success in order to provide outstanding stability. (MTD Paragraph 4.) Allowable Subject Matter Claims 6-9 are 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. The following is a statement of reasons for the indication of allowable subject matter: Claim 6 includes the limitations of the first end (111a) of the connection tube part (111) comprises a concavely disposed groove (113), and one side of the positioning member (24) comprises a protrusion part (242), so that the groove (113) and the protrusion part (242) are engaged in a concave-convex manner. (Figs. 2, 4.) The closest prior art Lin (US 5,810,380) does not disclose the groove in the first end of the connection tube part engaging a protrusion part of the positioning member. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. The references cited on the PTO-892 form disclose similar features of the claimed invention. Any inquiry concerning this communication or earlier communications from the examiner should be directed to JAMES A ENGLISH whose telephone number is (571)270-7014. The examiner can normally be reached on Monday-Saturday. 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, Jason Shanske can be reached on 571-270-5985. 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 https://ppair-my.uspto.gov/pair/PrivatePair. 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. /JAMES A ENGLISH/Primary Examiner, Art Unit 3614
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Prosecution Timeline

Jan 08, 2024
Application Filed
Feb 13, 2026
Non-Final Rejection — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12600190
SNOWMOBILE WITH FRONT SUSPENSION ASSEMBLIES
2y 5m to grant Granted Apr 14, 2026
Patent 12577976
DEVICE
2y 5m to grant Granted Mar 17, 2026
Patent 12559060
OCCUPANT RESTRAINT DEVICE
2y 5m to grant Granted Feb 24, 2026
Patent 12552436
BRAKE ASSEMBLY FOR ROBOTIC SURGERY SYSTEM
2y 5m to grant Granted Feb 17, 2026
Patent 12552219
DISCONNECTABLE SWAY BAR LINK
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
81%
Grant Probability
90%
With Interview (+9.0%)
2y 2m
Median Time to Grant
Low
PTA Risk
Based on 1145 resolved cases by this examiner. Grant probability derived from career allow rate.

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