Prosecution Insights
Last updated: July 17, 2026
Application No. 18/285,746

USE OF ANTI-CLOTTING COMPOUNDS AS RODENTICIDES

Non-Final OA §102§103§112
Filed
Oct 05, 2023
Priority
Apr 06, 2021 — EU 21166946.0 +1 more
Examiner
MAEWALL, SNIGDHA
Art Unit
1612
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Dietrich Gulba
OA Round
1 (Non-Final)
59%
Grant Probability
Moderate
1-2
OA Rounds
7m
Est. Remaining
69%
With Interview

Examiner Intelligence

Grants 59% of resolved cases
59%
Career Allowance Rate
625 granted / 1064 resolved
-1.3% vs TC avg
Moderate +10% lift
Without
With
+10.4%
Interview Lift
resolved cases with interview
Typical timeline
3y 4m
Avg Prosecution
48 currently pending
Career history
1114
Total Applications
across all art units

Statute-Specific Performance

§101
0.7%
-39.3% vs TC avg
§103
68.6%
+28.6% vs TC avg
§102
1.4%
-38.6% vs TC avg
§112
1.7%
-38.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1064 resolved cases

Office Action

§102 §103 §112
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 . Detailed Action Restriction/Election Applicant’s election without traverse of Group I, claims 1-2, 4-5, 13-15, 17 and 21 in the reply filed on 03/26/26 is acknowledged. Applicant’s election of the following species is also acknowledged: 1. Betrixaban as Factor Xa inhibitor, 2. Dabigatran as Factor Ila inhibitor acting as a thrombin inhibitor, 3. Atopaxar as a Factor lla inhibitor acting as a thrombin receptor antagonist, 4. Prasugrel as a P2Y12 receptor antagonist, and 5. Verapamil as the Pgp inhibitor. Claims 8-10, 18-20 and 22-24 are withdrawn from further consideration pursuant to 37 CFR 1.142(b) as being drawn to a nonelected invention/election, there being no allowable generic or linking claim. Election was made without traverse in the reply filed on 03/26/26. Claim Rejections - 35 USC § 112, indefiniteness The following is a quotation of 35 U.S.C. 112(b): The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the inventor or a joint inventor regards as the invention. The following is a quotation of 35 U.S.C. 112 (pre-AIA ), second paragraph: The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the applicant regards as his invention. Claims 2, 4-5, 14, 15 and 17 are rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor, or for pre-AIA the applicant regards as the invention. Regarding claims 2, 14-15 and 17, the phrase "preferably" and “in particular” render the claim indefinite because it is unclear whether the limitation(s) following the phrase are part of the claimed invention. See MPEP § 2173.05(d). Claims 4-5 contains the trademark/trade name Xarelto, Lixiana, Eliquis, Exanta, Pradaxa and argatra. Where a trademark or trade name is used in a claim as a limitation to identify or describe a particular material or product, the claim does not comply with the requirements of 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph. See Ex parte Simpson, 218 USPQ 1020 (Bd. App. 1982). The claim scope is uncertain since the trademark or trade name cannot be used properly to identify any particular material or product. A trademark or trade name is used to identify a source of goods, and not the goods themselves. Thus, a trademark or trade name does not identify or describe the goods associated with the trademark or trade name. In the present case, the trademark/trade name is used to identify/describe active ingredients which act as Xa inhibitor with specific IUPAC names and, accordingly, the identification/description is indefinite. 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 1-2, 4, 11 and 13 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Gulba et al. (Gulba Dietrich: "Evaluation of the Results of the Interim analysis of the Proof of Principle Study: Efficacy assessment of a mixture of four different ingredients against wild born Norway rats", European Patent Register: all documents EP3154343/EP15729428.1, 1 December 2020 (2020-12-01), pages 1-3, presented in IDS). Gulba et al. discloses a composition for controlling harmful rodents, in particular rats, comprising betrixaban maleate (factor Xa inhibitor as claimed), prasugrel (thrombocyte aggregation inhibitor), acetylsalicylic acid (thrombocyte aggregation inhibitor) and ketoconazole (P-glycoprotein inhibitor). Gulba et al. discloses a composition containing betrixaban maleate (factor Xa inhibitor), prasugrel (thrombocyte aggregation inhibitor), acetylsalicylic acid (thrombocyte aggregation inhibitor) and ketoconazole (P-glycoprotein inhibitor). It was formulated as a bait and fed to brown rats (Rattus norvegicus). A mortality rate of 30% was observed (the entire document). Claims 1-2, 4, 11, 13, 21 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Sinha et al. (US PG Pub. 2008/0254036 A1). Sinha et al. discloses compositions containing betrixaban (Xa inhibitor) and acetylsalicylic acid (claims 37 and 40) (IIa inhibitor). Also disclosed are compositions containing betrixaban and verapamil, diltiazem OT amiodarone (paragraphs [0112]-[0114] and [0116]-[0118]; claims 41 and 43). 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, 4, 13 and 21 are rejected under 35 U.S.C. 103 as being unpatentable over Gulba et al. (Gulba Dietrich: "Evaluation of the Results of the Interim analysis of the Proof of Principle Study: Efficacy assessment of a mixture of four different ingredients against wild born Norway rats", European Patent Register: all documents EP3154343/EP15729428.1, 1 December 2020 (2020-12-01), pages 1-3) in view of Greiner Christine et al. ("Teil 7: P-Glykoprotein -Bedeutung für den Arzneistoffmetabolismus", Lexikon der Pharmakologie - Interaktionslexikon: Neurotransmitter, 1 September 2010 (2010-09-01), pages 40-42, presented in IDS). Gulba et al. discloses a composition for controlling harmful rodents, in particular rats, comprising betrixaban maleate (factor Xa inhibitor as claimed), prasugrel (thrombocyte aggregation inhibitor), acetylsalicylic acid (thrombocyte aggregation inhibitor) and ketoconazole (P-glycoprotein inhibitor). Gulba et al. discloses a composition containing betrixaban maleate (factor Xa inhibitor), prasugrel (thrombocyte aggregation inhibitor), acetylsalicylic acid (thrombocyte aggregation inhibitor) and ketoconazole (P-glycoprotein inhibitor). It was formulated as a bait and fed to brown rats (Rattus norvegicus). A mortality rate of 30% was observed (the entire document). Gulba is considered to be the prior art closest to the subject matter of claim 1. It discloses a composition for controlling harmful rodents, characterized in that the composition comprises: a) a factor Xa inhibitor and b) a P-glycoprotein inhibitor, and additionally characterized in that the composition additionally comprises thrombocyte aggregation inhibitors from the group of cyclooxygenase inhibitors and P2Y12 receptor antagonists. Gulba et al. does not disclose a composition containing a P-glycoprotein inhibitor as claimed/elected, verapamil of claim 2. Greiner et al. discloses P-glycoprotein inhibitors, such as amiodarone, quinidine, propafenone, verapamil, erythromycin, clarithromycin, ketoconazole, itraconazole or ritonavir (table 1). P-glycoprotein, which acts as a transport protein, is of great importance in detoxifying active pharmaceutical ingredients. P-glycoprotein can have a considerable influence on the bioavailability of active ingredients. The bioavailability of an active ingredient is increased if a P-glycoprotein inhibitor is added to it at the same time. P-glycoprotein is also of great importance for the formation of the blood-brain barrier. If a P-glycoprotein inhibitor is dosed, it is possible in particular for lipophilic active ingredients to also reach the brain (page 40, column 1, line 1 – page 41, column 1, line 19). It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to have utilized verapamil as taught by Greiner et al. One of ordinary skill would have been motivated to do so because Greiner et al. teaches that P-glycoprotein, which acts as a transport protein, is of great importance in detoxifying active pharmaceutical ingredients. P-glycoprotein can have a considerable influence on the bioavailability of active ingredients. The bioavailability of an active ingredient is increased if a P-glycoprotein inhibitor is added to it at the same time. P-glycoprotein is also of great importance for the formation of the blood-brain barrier. Claims 5, 14-15 and 17 are rejected under 35 U.S.C. 103 as being unpatentable over Gulba et al. (Gulba Dietrich: "Evaluation of the Results of the Interim analysis of the Proof of Principle Study: Efficacy assessment of a mixture of four different ingredients against wild born Norway rats", European Patent Register: all documents EP3154343/EP15729428.1, 1 December 2020 (2020-12-01), pages 1-3, presented in IDS) in view of Gulba et al. (WO 2015/189331 A1, ‘331, presented in IDS) Gulba et al. as discussed above do not teach use of at least one factor (thrombin inhibitor), Debigatran and the amounts of the components. Gulba et al. ‘331 proposes the possibility of using compounds from the classes thrombin inhibitors, thrombin receptor antagonists, factor Xa inhibitors, plasminogen activator inhibitor inhibitors, P2Y12 receptor antagonists and GPIIb/IIIa receptor antagonists as a rodenticide. It is intended that the compounds can be combined in a bait for harmful rodents (paragraphs [0078]-[0083]; claims 1 and 9). Gulba teaches that a benzimidazole derivative with a benzamidine group according to WO 1998/37075 is dabigatran, a competitive, reversible and direct thrombin inhibitor. A prodrug, Dabigatranetexilat (Pradaxa®), which is converted into dabigatran in vivo, is described in more detail in International Patent Application WO 03/074056. Dabigatran is approved in the EU for the prevention of the formation of blood clots in the veins after elective knee or hip replacement surgery, as well as for stroke prevention in patients with atrial fibrillation and stroke risk. Its most common adverse drug reaction (side effect) in humans is gastrointestinal bleeding, see [129]. It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to have utilized dabigatran as taught by Gulba ‘331 into the rodenticide composition of Gulba et al. One of ordinary skill would have been motivated to do so because Gulba teaches that the possibility of using compounds from the classes thrombin inhibitors, thrombin receptor antagonists, factor Xa inhibitors, plasminogen activator inhibitor inhibitors, P2Y12 receptor antagonists and GPIIb/IIIa receptor antagonists as a rodenticide. It is intended that the compounds can be combined in a bait for harmful rodents (paragraphs [0078]-[0083]; claims 1 and 9). And Gulba characterizes Debigatran as thrombin inhibitor. Manipulation of the amounts would be within skill of an artisan by performing experimental manipulations. Correspondence Any inquiry concerning this communication or earlier communications from the examiner should be directed to SNIGDHA MAEWALL whose telephone number is (571)272-6197. The examiner can normally be reached Monday thru Friday; 8:30 AM to 5PM. 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, Sahana S. Kaup can be reached on 571-272-6897. 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. /SNIGDHA MAEWALL/Primary Examiner, Art Unit 1612
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Prosecution Timeline

Oct 05, 2023
Application Filed
Jun 17, 2026
Non-Final Rejection mailed — §102, §103, §112 (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
59%
Grant Probability
69%
With Interview (+10.4%)
3y 4m (~7m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1064 resolved cases by this examiner. Grant probability derived from career allowance rate.

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