AUC IURIDICA
AUC IURIDICA

Acta Universitatis Carolinae Iuridica (AUCI) is the main journal of the Faculty of Law of Charles University. It has been published since 1954 and is one of the traditional law journals with a theoretical focus.

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AUC IURIDICA, Vol 71 No 4 (2025), 161–186

Article

Contract Interpretation and Artificial Intelligence

Elisa Arietti, Jan Smítal

DOI: https://doi.org/10.14712/23366478.2025.677
published online: 04. 12. 2025

abstract

This paper analyzes how artificial intelligence (AI) can impact contract interpretation in transnational transactions. It explores the challenges posed by differing legal systems and interpretative principles like subjective intent and objective meaning. AI’s ability to detect multiple plausible meanings and resolve ambiguities in contracts is examined, along with its potential to improve efficiency and neutrality of the drafting process. Furthermore, risks such as bias, ethical issues, and resistance to AI from the legal community and practitioners are considered in this study, ultimately advocating for a balanced use of AI alongside human oversight to ensure legitimacy and compatibility with diverse legal frameworks.

keywords: Generative AI; contract interpretation; LLM; transnational transactions

references (46)

1. 89/2012 Sb. ACT of 3 February 2012 the Civil Code [online]. [cit. 2025-09-05]. Available at: http://obcanskyzakonik.justice.cz/images/pdf/Civil-Code.pdf.

2. An overview of the Gemini app. In: Gemini [online]. [cit. 2025-09-05]. Available at: https://gemini.google/overview/.

3. ARBEL, Y. - HOFFMAN, D. A. Generative Interpretation. New York University Law Review. 2024, Vol. 99, No. 2, pp. 451-514.

4. AUTTO, H. - HAAPIO, H. - NUOTTILA, J. Contracts rethought and redesigned: A new era with AI. International Journal of Commerce and Contracting [online]. 2024, Vol. 8, No. 1-2, pp. 7- 36 [cit. 2025-09-05]. CrossRef

5. BAR, CH. VON - CLIVE, E. - SCHULTE-NÖLKE, H. (eds.). Draft Common Frame of Reference (DCFR). In: TRANS-LEX.org: Law Research [online]. 2009 [cit. 2025-09-05]. Available at: https://www.trans-lex.org/400725/_/outline-edition-/#toc_31.

6. CATTERWELL, R. Automation in contract interpretation. Law, Innovation and Technology. 2020, Vol. 12, No. 1, pp. 81-112. CrossRef

7. CROSS, R. Statutory Interpretation. London: Butterworths, 197.

8. DEMOGUE, R. Traité des obligations en général. Tome 5. Paris: Arthur Rousseau, 1923.

9. DE NOVA, G. Il contratto. In: DE NOVA, G. Trattato di diritto civile e commerciale. Vol. IV, Tomo I. Miano: Giuffrè, 2005.

10. FIALA, J. - HURDÍK. Contract law in the Czech Republic. Netherlands: Kluwer Law International B. V., 2020.

11. GPT-4o System Card: Open AI [online]. 8. 8. 2024 [cit. 2025-09-05]. Available at: https://cdn.openai.com/gpt-4o-system-card.pdf.

12. GREGORCIC, B. - PENDRILL, A.-M. ChatGPT and the Frustrated Sokrates. Physics Education [online]. 2023, Vol. 58, No. 3, pp. 1-9 [cit. 2025-09-05]. CrossRef

13. GRUNDMANN, S. Digital Technology as a Challenge to European Contract Law. European Review of Contract Law. 2017, Vol. 13, No. 3, pp. 279 and following. CrossRef

14. HERBOTS, J. H. Interpretation of Contracts. In: SMITS, J. M. - HUSA, J. - VALCKE, C. - NARCISO, M. (eds.). Elgar Encyclopedia of Comparative Law. Cheltanham: Edward Elgar Publishing, 2023, p. 279. CrossRef

15. HOEKTRA, J. Non-state rules in International Commerce Law. London: Routledge, 2021. CrossRef

16. Hotchkiss v. National City Bank of New York, 200 F. 287 (S.D.N.Y. 1911), aff'd 231 U.S. 50 (1913).

17. International Institute for the Unification of Private Law. UNIDROIT Principles of International Commercial Contracts [online]. Rome: International Institute for the Unification of Private Law, 2016, Art. 4.1 [cit. 2025-09-05]. Available at: https://www.unidroit.org/wp-content/uploads/2021/06/Unidroit-Principles-2016-English-i.pdf.

18. Introducing ChatGPT. In: OpenAI [online]. [cit. 2025-09-05]. Available at: https://openai.com/blog/chatgpt.

19. Introducing OpenAI o3 and o4-mini. In: OpeAI [online]. 16. 4. 2025 [cit. 2025-09-05]. Available at: https://openai.com/index/introducing-o3-and-o4-mini/.

20. Investors Compensation Scheme Ltd v. West Bromwich Building Society [1998] 1 WLR 896.

21. Judgment of the Constitutional Court of 14. 4. 2005, file no. I. ÚS 625/03.

22. KANE, R. Gemini vs. ChatGPT: What's the difference? [2025]. In: zapier [online]. 14. 7. 2025 [cit. 2025-09-05]. Available at: https://zapier.com/blog/gemini-vs-chatgpt/.

23. KERNER, S. M. ChatGPT search: Details about OpenAI's search engine. In: TechTarget [online]. 13. 12. 2024 [cit. 2025-09-05]. Available at: https://www.techtarget.com/whatis/feature/SearchGPT-explained-Details-about-OpenAIs-search-engine?utm_source=chatgpt.com or https://yoast.com/chatgpt-search/?utm_source=chatgpt.com.

24. LAVICKÝ, P. et al. Občanský zákoník I.: obecná část (§ 1−654) [Civil Code I.: General Part (§ 1−654)]. 2nd ed. Prague: C. H. Beck, 2022.

25. MELZER, F. - TÉGL, P. a kol. Občanský zákoník: svazek III: § 419-654: velký komentář [Civil Code: Volume III: Sections 419-654: Extensive Commentary]. Praha: Leges, 2014.

26. MERKEN, S. New York Lawyers Sanctioned for Using Fake ChatGPT Cases in Legal Brief. In: Reuters [online]. 26. 6. 2023 [cit. 2025-09-05]. Available at: https://www.reuters.com/legal/new-york-lawyers-sanctioned-using-fake-chatgpt-cases-legal-brief-2023-0622/.

27. MOSS, G. C. International Contracts between Common Law and Civil Law: Is Non-state Law to Be Preferred? The Difficulty of Interpreting Legal Standards Such as Good Faith. Global Jurist [online]. 2007, Vol. 7, No. 1 [cit. 2025-09-05]. CrossRef

28. Občanský zákoník č. 89/2012 Sb. [Civil Code Act No. 89/2012 Coll.]

29. Oxford Dictionary of Law. 9th ed. Oxford: Oxford University Press, 2022.

30. PETROV, J. - VÝTISK, M. - BERAN, V. et al. Občanský zákoník: komentář [Civil Code: Commentary]. 2nd ed. (3rd update). Prague: C. H. Beck, 2024.

31. Plenary decision of the Constitutional Court of 17. 12. 1997, file no. ÚS 33/97.

32. POSNER, R. A. The Law and Economics of Contract Interpretation. Texas Law Review. 2005, Vol. 83, No. 6, pp. 1581-1614.

33. Principles of European Contract Law - PECL. In: TRANS-LEX.org: Law Research [online]. [cit. 2025-09-05]. Available at: https://www.trans-lex.org/400200

34. SAVIGNY, F. C. VON. System des heutigen römischen Rechts. Bd. 1. Berlin: Veit, 1840. CrossRef

35. REGULATION (EU) 2024/1689 OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 13 June 202 laying down harmonised rules on artificial intelligence and amending Regulations (EC) No 300/2008, (EU) No 167/2013, (EU) No 168/2013, (EU) 2018/858, (EU) 2018/1139 and (EU) 2019/2144 and Directives 2014/90/EU, (EU) 2016/797 and (EU) 2020/1828 (Artificial Intelligence Act), (EU) 2024/1689. Official Journal of the European Union [online]. L series, 12. 7. 2024 [cit. 2025-09-05]. Available at: https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=OJ:L_202401689.

36. SIONTIS, K. C. - ATTIA, Z. I. - ASIRVATHAM, S. J. - FRIEDMAN, P. A. ChatGPT Hallucinating: Can It Get Any More Humanlike? European Heart Journal [online]. 2024, Vol. 45, No. 5, pp. 321-23 [cit. 2025-09-05]. CrossRef

37. Supreme Court of Czech Republic, 21 Cdo 2300/2017.

38. Supreme Court of Czech Republic, 27 Cdo 3759/2017.

39. Supreme Court of Czech Republic, 29 Cdo 61/2017.

40. Supreme Court of Czech Republic, 31 Cdo 684/2020.

41. Supreme Court of Czech Republic, 32 Cdo 939/2018.

42. Supreme Court of Czech Republic, 33 Cdo 4789/2009.

43. ŠVESTKA, J. - DVOŘÁK, J. - FIALA, et al. Občanský zákoník: komentář. Svazek I: obecná část (§ 1 až 654) [Civil Code: Commentary. Volume I: General section (§ 1 to 654)]. Prague: Wolters Kluwer, 2020.

44. United Nations Convention on Contracts for the International Sale of Goods (Vienna, 1980) (CISG). In: United Nations [online]. [cit. 2025-09-05]. Available at: https://uncitral.un.org/en/texts/salegoods/conventions/sale_of_goods/cisg.

45. VALCKE, C. Contractual Interpretation at Common Law and Civil Law: An Exercise in Comparative Legal Rhetoric. In: NEYERS, J. (ed.). Exploring Contract Law. Oxford, Portland: Hart Publisher, 2008, pp. 87-88.

46. ZWEIGERT, K. - KÖTZ, H. Introduction to Comparative Law. Oxford: Clarendon Press, 1987, Vol. II, pp. 83-94.

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