For the Inventor, By the Inventor

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Coralville, IA, United States of America

Kempharm, Inc.

USPTO Granted Patents = 57

CIPO Patents = 7

EPO Patents = 8

Trademarks = 12

Forward Citations = 261

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14 inventors (with patents filed for the assignee):

Travis C Mickle (54 out of 95 patents)

Sven Guenther (53 out of 64 patents)

Guochen Chi (36 out of 40 patents)

4. Jaroslaw Kanski (29 out of 30 patents)

5. Andrea K Martin (29 out of 30 patents)

6. Bindu Bera (28 out of 29 patents)

7. Sanjib Bera (19 out of 27 patents)

8. Christal Mickle (17 out of 20 patents)

9. Subhash Desai (2 out of 5 patents)

10. Mahmoud Mirmehrabi (1 out of 17 patents)

11. Brian Heinrich (1 out of 11 patents)

12. Da-Ming Gou (1 out of 3 patents)

13. Bernhard J Paul (1 out of 21 patents)

14. Daniel J Coughlin (1 out of 19 patents)

Core Competencies:

Methylphenidate Prodrugs

Benzoic Acid Derivatives

Hydrocodone Conjugates

Quetiapine Conjugates

Dextroamphetamine Compounds

Levorphanol Prodrugs

Fatty Acid Conjugates

Phenylethanoic Acid Conjugates

Therapeutic Formulations

Polymorphic Forms

Amino Acid Conjugates

Hydromorphone Prodrugs

57 patents: Sort by Forward Citations

1. 11505537 - Compositions comprising methylphenidate-prodrugs, processes of making and using the same (2022-11-22),

2. 11234975 - Levorphanol prodrugs and processes for making and using them (2022-02-01),

3. 11214544 - Dextrorphan prodrugs and processes for making and using them (2022-01-04),

4. 11174229 - D-amphetamine compounds, compositions, and processes for making and using the same (2021-11-16),

5. 11136295 - D-amphetamine compounds, compositions, and processes for making and using the same (2021-10-05),

6. 11021460 - Compositions comprising methylphenidate-prodrugs, processes of making and using the same (2021-06-01),

7. 11021459 - Compositions comprising methylphenidate-prodrugs, processes of making and using the same (2021-06-01),

8. 10954213 - Compositions comprising methylphenidate-prodrugs, processes of making and using the same (2021-03-23),

9. 10954212 - Compositions comprising methylphenidate-prodrugs, processes of making and using the same (2021-03-23),

10. 10912744 - Therapeutic formulation for reduced drug side effects (2021-02-09),

11. 10870654 - Pharmaceutically acceptable salts and polymorphic forms of hydrocodone benzoic acid enol ester and processes for making same (2020-12-22),

12. 10858341 - Compositions comprising methylphenidate-prodrugs, processes of making and using the same (2020-12-08),

13. 10759778 - Methylphenidate-prodrugs, processes of making and using the same (2020-09-01),

14. 10758528 - Benzoic acid, benzoic acid derivatives and heteroaryl carboxylic acid conjugates of oxymorphone, prodrugs, methods of making and use thereof (2020-09-01),

15. 10654863 - Benzoic acid, benzoic acid derivatives and heteroaryl carboxylic acid conjugates of hydrocodone, prodrugs, methods of making and use thereof (2020-05-19),

Company Overview

Kempharm, Inc., based in Coralville, Iowa, specializes in the development of pharmaceutical prodrugs aimed at enhancing the therapeutic profiles of existing medications. The company focuses on innovative drug delivery systems, particularly in the areas of methylphenidate and hydrocodone prodrugs, as well as various conjugates involving benzoic acid and fatty acids. Kempharm's research is dedicated to improving efficacy and safety in treatment options, addressing unmet medical needs through its advanced drug formulation technologies.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

57 Patents

#2 in Coralville, IA

#39 in Iowa

#6,252 in US

#12,573 in the World

Coralville, IA, United States of America

Kempharm, Inc.

Forward Citations = 261

14 inventors:

Travis C Mickle (54 out of 95 patents)

Sven Guenther (53 out of 64 patents)

Guochen Chi (36 out of 40 patents)

4. Jaroslaw Kanski (29 out of 30 patents)

5. Andrea K Martin (29 out of 30 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Kempharm, Inc.. Retrieved from https://idiyas.com/company/kempharm

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]

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