Prosecution Insights
Last updated: April 19, 2026
Application No. 18/853,099

MIXER FOR MIXING AT LEAST TWO MATERIALS AND MIXING AND DISPENSING ASSEMBLY

Non-Final OA §102
Filed
Sep 30, 2024
Examiner
ZADEH, BOB
Art Unit
3754
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Medmix Switzerland AG
OA Round
1 (Non-Final)
77%
Grant Probability
Favorable
1-2
OA Rounds
2y 3m
To Grant
99%
With Interview

Examiner Intelligence

Grants 77% — above average
77%
Career Allow Rate
601 granted / 783 resolved
+6.8% vs TC avg
Strong +39% interview lift
Without
With
+39.1%
Interview Lift
resolved cases with interview
Typical timeline
2y 3m
Avg Prosecution
26 currently pending
Career history
809
Total Applications
across all art units

Statute-Specific Performance

§103
41.6%
+1.6% vs TC avg
§102
29.1%
-10.9% vs TC avg
§112
23.6%
-16.4% vs TC avg
Black line = Tech Center average estimate • Based on career data from 783 resolved cases

Office Action

§102
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 . The preliminary amendment filed on 9/30/2024 has been entered. Claim Rejections - 35 USC § 102 The following is a quotation of the appropriate paragraphs of 35 U.S.C. 102 that form the basis for the rejections under this section made in this Office action: A person shall be entitled to a patent unless – (a)(1) the claimed invention was patented, described in a printed publication, or in public use, on sale, or otherwise available to the public before the effective filing date of the claimed invention. Claims 1-20 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Pappalardo (US 2014/0117044). Regarding claim 1, Pappalardo discloses a mixer (14, [0052]) for mixing at least two materials (22a, 22b, [0053]), the mixer being configured to be connected to a cartridge (via 20 on 12), and the mixer comprising: a mixer housing (42); a mixing element (14) having a first end and a second end opposite the first end,, a longitudinal axis extending therebetween (ends of 14 in 42), first and second entry openings arranged at the first end and an outlet opening arranged at the second end (openings, 48, 50), the mixing element further being arranged at least partly within the mixer housing (14 within 42 and [0055]); an alignment element (56 and 38) configured to align the mixer at a predetermined angle relative to the cartridge; and a connection element (20) configured to connect the mixer to the cartridge by a form-fitting connection (via 16), and the connection element being a click connection or a snap lock connection ([0052]). Regarding claim 2, Pappalardo discloses the connection element is arranged at the mixer housing (20 on 42, 52). Regarding claim 3, Pappalardo discloses a release element configured to release the connection to detach the mixer from the cartridge (via 64, 66). Regarding claim 4, Pappalardo discloses the release element is arranged at the mixer housing (see fig.1-2, fig.11-14). Regarding claim 5, Pappalardo discloses the release element is a wing configured to be pressed against or pulled away from the connection element to release the connection element (see shape of 70, 16, 20). Regarding claim 6, Pappalardo discloses release element is one of two release elements arranged opposite from one another that are configured to release the connection of the connection element (see fig.14). Regarding claim 7, Pappalardo discloses the connection element is arranged at the release element (see fig.2). Regarding claim 8, Pappalardo discloses the alignment element is arranged at the mixer housing (see 56 on 42). Regarding claim 9, Pappalardo discloses the alignment element further comprises at least one alignment surface (see surface of 56). Regarding claim 10, Pappalardo discloses a mixing and dispensing assembly (fig.1-26) for mixing and dispensing at least two materials ([0053]) comprising: a mixer (14) to mix the at least two elements and a cartridge (12), the mixer comprising a mixer housing (42), a mixing element having a first end and a second end opposite the first end, a longitudinal axis extending therebetween (ends of 14), first and second entry openings arranged at the first end and an outlet opening arranged at the second end (openings, 48, 50), the mixing element further being arranged at least partly within the mixer housing ([0055]), an alignment element (56) configured to align the mixer at a predetermined angle relative to the cartridge (via 38), and a connection element (16, 66) configured to connect the mixer to the cartridge by a form-fitting connection (see fig.1-2), the connection element is a click connection or a snap lock connection ([0052]). Regarding claim 11, Pappalardo discloses the cartridge comprises a cartridge head having at least two outlet openings, with the cartridge head further being configured to be connected to the mixer at the predetermined angle (cartridge head having 36a, 36b). Regarding claim 12, Pappalardo discloses the cartridge comprises connection elements complementary to the connection element and configured to engage with the connection element (via 40). Regarding claim 13, Pappalardo discloses the cartridge further comprises an alignment portion configured to rest on the alignment element of the mixer (via 56 on 38). Regarding claim 14, Pappalardo discloses the alignment portion comprises at least one alignment surface configured to align the cartridge with respect to the mixer by leaning against the alignment element of the mixer (see fig.1-2, shape of 56 and 38). Regarding claim 15, Pappalardo discloses a click connection to detach the mixer from the cartridge (via 66 and 40). Regarding claim 16, Pappalardo discloses the release element is arranged at an outer surface of the mixer housing (see location of 20). Regarding claim 17, Pappalardo discloses the connection element is arranged at the release element at a surface facing the cartridge (see fig.2). Regarding claim 18, Pappalardo discloses the alignment element is arranged at an outer surface of the mixer housing, between the two release elements (see fig.14). Regarding claim 19, Pappalardo discloses the cartridge head comprises connection elements complementary to the connection element and configured to engage with the connection element (see fig.14, via plurality of 144 and 130). Regarding claim 20, Pappalardo discloses the alignment portion comprises at least one alignment surface configured to align the cartridge with respect to the mixer by leaning against the at least one alignment surface of the alignment element of the mixer (see fig.1). State of the Prior Arts Regarding claims 1 and 10, the prior arts to Pappalardo (US 2014/0117044), Hauser (US 2008/0083782), Suchan (US 2006/0157508), Brown (US 2005/0035153), Pappalardo (US 10,641,423), Euro (DE 202006004738 U1), Greter (US 2011/0121035) and Bender (WO 2010117266 A1) as cited in PTO-892, either individually or in combination are disclosing/teaching significant pertinent structures or features to the applicant’s claimed invention with regard to a mixer for mixing at least two materials connected to a cartridge having a mixer housing; a mixing element with a first end and a second end opposite the first end, a longitudinal axis extending therebetween, first and second entry openings arranged at the first end and an outlet opening arranged at the second end, the mixing element further being arranged at least partly within the mixer housing; an alignment element to align the mixer at a predetermined angle relative to the cartridge; and a connection element to connect the mixer to the cartridge by a form-fitting connection, and the connection element being a click connection or a snap lock connection. It appears that claims 1 and 10 do not provide any inventive concept over the cited prior arts. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to Bob Zadeh whose telephone number is (571)270-5201. The examiner can normally be reached Monday-Friday 8am-4pm E. 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, Paul Durand can be reached at (571) 272-4459. 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. /BOB ZADEH/Primary Examiner, Art Unit 3754
Read full office action

Prosecution Timeline

Sep 30, 2024
Application Filed
Mar 30, 2026
Non-Final Rejection — §102 (current)

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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
77%
Grant Probability
99%
With Interview (+39.1%)
2y 3m
Median Time to Grant
Low
PTA Risk
Based on 783 resolved cases by this examiner. Grant probability derived from career allow rate.

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