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1. Requirements

  • Exact compliance is required with regard to time, place and mode of performance
  • Actual tender is required; verbal communication of readiness and willingness is not enough
  • Tender of partial performance is not enough:

84Daka781: The plaintiff owes to the Defendant an outstanding balance of KRW1,213,809. On 1 July 1983, the Plaintiff tendered an amount of payment but the Defendant refused to accept the payment. The Plaintiff paid into the court KRW510,000. Lower court held that the debt was partially repaid to the extent of the the amount paid into the court. Supreme Court overturned the decision, holding that given that it is not established how much was tendered, the payment into the court cannot have an effect of (even a partial) repayment of the debt.

2. Non-acceptance of the tender (mora creditoris)

  • Art. 400, Art 403
  • Interest stops to accrue
  • Relaxed duty of care (obligor is liable for intentional breach or gross negligence only) 2010Da11323: in an exchange contract, party A tendered the performance (offered to transfer the title of a property to B, as agreed) and party B failed to accept it. B was therefore in mora creditoris. A subsequently disposed of the property to a third party. Supreme Court held that A shall be liable for the non-performance.
  • Increased costs of performance due to mora creditoris must be compensated by the obligee.
  • Inapplicable to a sale contract.
    • Art 587: Purchaser not required to pay interest until delivery (or deposit into court) of the thing sold. 95Da14190
    • Art 374: Seller must bear the costs of maintaining and preserving the thing sold until it is delivered (even while the buyer is in mora creditoris and in delay, or in repudiatory breach of its obligation to pay the purchase price). 80Da211

3. Tender in a sale contract where the parties agreed upon simultaneous performance

  • One party's tender will put the other party in breach (if the other party does not perform its obligation)
  • However, the breach will not continue unless the tender continues. 94Da26646, 2010Da11323
  • In a sale contract, the purchaser need not pay delay interest, need not bear the seller's costs of safekeep or the increased costs of performance until the delivery of the thing sold (See Art. 587. N.B. Art 403 inapplicable). 96Da14190, 80Da211. This is because the seller not only has an obligation to maintain and to preserve the thing sold until it is delivered (Art. 374) but, more importantly, the seller (unlike a lessee who has to return the object of lease) may fully benefit from the undelivered thing while it remains undelivered and also because the seller is entitled to keep the fruit from the thing while it remains undelivered.
  • The seller could, if it so chooses, deposit the thing sold into court (= equivalent to the delivery to the purchaser). From then on, the seller shall be entitled to delay damage in respect of unpaid purchase price.

 4. Does non-acceptance constitute a breach (a repudiatory breach) of contract?

  • May the debtor terminate the contract?
  • Indefinitely bound by the contract?
  • Payment into Court
  • Refusal to accept v. Refusal to perform
  • (cf.) English law: Sale of Goods Act 1979, section 37 (Buyer's neglect to take delivery may hold him liable to compensate for the seller's loss. Seller is discharged.)

1. Art. 108

  • Contract and its uses
  • Hidden purpose
  • Contravention

2. The 'true' intent?

3. Null and Void

  • Protection of third party in good faith

1. Non-genuine representation

  • Binding
  • Not binding if the counterpart ought to have been aware that it was non-genuine

2. Null and void

  • No need to rescind
  • free from the limitation period affecting rescission

3. Wide (perhaps too wide) ranging application

  • 92Da3670 (Busan Fish Market)
  • 92Da41528 (Forced donation)

1. Fundamental unfairness

  • laesio enormis
  • usury (Regulation of Interest Act)
  • Consumer Contract
  • Art. 339
  • Arts. 607, 608
  • Art. 652

2. Art. 104

  • unfairness of the bargain
    • imbalance of exchange
    • At the time of the contract
    • But, see 65Da610: Contract upheld if it is not unfair at the time of performance (The case was about an accord and satisfaction. Court ruled that unfairness must be determined not at the time of the accord, but at the time of the satisfaction)
  • circumstances affecting the party
    • dire circumstances
    • rashness
    • inexperience

3. Causal connection and intention

  • Intention to use the circumstances affecting the party as a leverage.

4. Null and void

  • Restitution
  • Ob turpem, iniustam causam?

5. Cases

  • 94Da34432 (Art 104)(Kukche Group)

    (In a case where a borrower company’s shares were sold by the shareholders themselves at the nominal price of 1 KRW per share to the purchaser who is designated by the lender, the Supreme Court ruled that the price may not be viewed as excessively low and that the transaction was not “manifestly unfair” under Article 104 of the Korean Civil Code. In making the ruling, the Supreme Court referred to, among others, the fact that the company’s total liabilities exceeded its assets and thus the net worth of the company was in the negative. The case was not about a pledgee’s disposal of the pledged property. It was the shareholders themselves who decided to sell their own shares when the company was on the verge of bankruptcy and the trading of the company’s shares was suspended by the Korea Stock Exchange and the government was announcing drastic measures aimed at corporate restructuring of the group of companies in question.

    The case was about whether the sale contract voluntarily concluded by the shareholders themselves should be declared null and void on the ground of “manifest unfairness” under Article 104 of the Korean Civil Code, which is based on the Roman legal rule of laesio enormis.)

  • 93Da49482 (Duress)(Shinhan Investment Financing, owned by a son-in-law of KukChe Group's Mr. Yang)
  • A pledgee has a duty of care in the disposal of the collateral. If, however, the pledge agreement stipulates a method of disposal, then there is no 'general' duty to sell the collateral at a reasonable price. As long as the pledge agreement is abided by, the reasonableness of the disposal price is not an issue (2007Da11996) or unreasonableness of the price alone is not a ground to invalidate the exercise of the pledge right (2018Da304007).

채권법 총론 (법학과)

채권자 취소권 [2009.5.21.제출]

채권양도의 효력/대항력 [2009.6.4. 제출]

대물변제 [2009.6.18 제출]

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Law of obligations 1 (Law School)

Discuss the legal effect of a contract tainted with "Illegality". [by 21 May]

Defence of simultaneous performance [by 4 June]

Measure of damages under Korean contract law [18 June]

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1. Deceitful conduct

  • active deception (telling a lie): knowingly misleading statement, giving a knowingly wrong answer to a specific question
  • passive deception (concealment): deliberate failure to discharge a duty to disclose
  • refusal to answer when requested to provide an answer?

good faith duty to disclose (2013Da97076, 2011Da59247) :

In a commercial transaction, where it is clear from rules of experience that if one party to the contract had disclosed particular circumstances which could have an impact on the validity of the contract or pose a risk to the other party’s entitlement, the other party would not have entered into the contract or at least not under the same terms or conditions of the contract, then the former has a good faith duty to disclose such circumstances beforehand. However, if the other party is already aware of those circumstances or has a duty to investigate or, in view of the relevant trade practice, is expected to be aware of them as a matter of course, etc., then a non-disclosure of such circumstances may not be viewed as violating the duty to disclose.

Examples of acceptable commercial practice

2002. 9. 4. 2000다54406, 54413
신의칙상의 주의의무가 인정된다고 볼 만한 특별한 사정이 없는 한, 어느 일방이 교환 목적물의 시가나 그 가액 결정의 기초가 되는 사항에 관하여 상대방에게 설명 내지 고지를 할 주의의무를 부담한다고 할 수 없고, 일방 당사자가 자기가 소유하는 목적물의 시가를 묵비하여 상대방에게 고지하지 아니하거나 혹은 허위로 시가보다 높은 가액을 시가라고 고지하였다 하더라도 이는 상대방의 의사결정에 불법적인 간섭을 한 것이라고 볼 수 없다

2001. 5. 29. 99다55601, 55618 Exaggeration in advertisement

68Da1749
The plaintiff (“well­ experienced entrepreneur”) intended to offer his property to secure a loan which he thought was to be made freshly to his acquaintance. He asked a branch manager of the defendant, a high street bank, whether his property was to secure a new loan to his acquaintance. The branch manager answered that it was the case. The branch manager knew that his answer was inaccurate because he intended to use the plaintiff’s property to secure an outstanding loan in the same amount which was already made to the plaintiff’s acquaintance. The contract of hypothec was rescinded. The Supreme Court upheld the rescission, ruling:

It is clear from the lower court’s judgment that rescission of the [contract in question] was allowed not because the defendant failed to fulfill its duty to disclose the start date of the loan. The branch manager of the defendant deceived the plaintiff into believing that upon concluding the contract, a loan of at least 20 million Korean Won would be made and this is how the contract in question was entered into. The lower court ruled that the contract was induced by deception and that the rescission was valid. The decision of the lower court was that rescission on the ground of deception can be done regardless of whether there was a mistake as to material elements of a contract. This is correct.

Intention to defraud (i.e. to gain profit) is not required (cf. 94DA44620). Commentaries to Civil Code, General Part (II), Park Jun Seo, ed., 3rd edn. (1999) p. 751.

2013Da97076: The case arose from a project debt transaction where a bank (the seller) sold the project debt collectable from a project company (who was pursuing a housing development project in the Philippines on a leased land) to a project financing company (the buyer). The buyer of the project debt purported to rescind the transaction arguing that the seller failed to disclose that there was a risk of an early termination of the land lease due to a prolonged delay of the housing development. But the Supreme Court ruled that if the seller did provide all relevant documents which are needed for the buyer to be apprised of the attendant risk, the seller would have fulfilled its duty to disclose because the seller has no further ‘duty to investigate’ into the detailed circumstances about the land lease.

2. Causation (Inducement)
Whether the victim was induced by deception must be determined by looking at the subjective decision-making mechanism of ‘that party’ or ‘the party’ rather than a ‘reasonable person’. If the deceitful conduct impacted the objective which was essential to the party in question (i.e. of subjective importance), then the causality will have been established.

If a party specifically requested a piece of information in the course of the negotiation, that piece of information will normally be regarded as having a sufficient causal connection with the party's subjective decision to enter into the contract.

Claimant's negligence is irrelevant: 2005Da5812 (Cemetery case)

Once the duty to disclose is thus recognised, one is not - except in the rare cases where the party had the duty to inform itself, or where the relevant trade practice is such that the other party should obviously have had the knowledge - relieved of the duty to inform the other party even if the party was negligent in not knowing the fact.

Where the other party had the knowledge, there is no room for discussing the duty to disclose. But if the other party did not know, his negligence can only have a bearing on the assessment of damages, rather than obviating the duty to disclose.

Dishonesty itself may sometimes be sufficiently material. 2006Do1813
A company's financial statements were "puffed up" to hide a net loss. The bank provided a loan on the basis of the financial statements. But the bank has often extended loans to companies with a net loss. The Supreme Court held:

If the bank had known that the company tried to conceal its net loss by submitting improperly prepared financial statements, it would have considered the company to be less reliable. [The reputational factor must also be taken into account in assessing whether the deceitful conduct induced the other party to enter into the contract. The Court held that the bank would not have made the loan had it known that the company attempted to deceive it.]

3. Wrongfulness
Deception and inducement cast a strong presumption that the conduct is wrongful. It is incumbent on the deceiving party to rebut this presumption.

2005Da38355: A bank issued a statement showing the client's account transactions, deliberately omitting certain outstanding loans. The statement was intended to be presented to Credit Gurantee Fund. The client, however, presented the statement to a private party who relied on the defective statement and became a tenant of the client paying a substantial lease deposit to the client. When the client went bankrupt, the client's debts turned out to be much greater than the amount indicated in the statement and the tenant could not recover the lease deposit. The tenant sued the bank in tort. The Court held:

if the bank deliberately or negligently issued a statement showing inaccurate account transactions, the conduct is in itself wrongful, regardless of the uses to which the statement was to be put.

4. Remedies
Rescission

Restitution

  • The party in good faith may keep the fruit (while good faith lasted) when returning the thing. Art .201. This applies to the seller as well, in returning the money. 대법원 1993.5.14, 선고, 92다45025, 판결
  • Termination of a contract has a different rule: 대법원 2014. 3. 13. 선고 2013다34143 판결 (Regardless of good faith or bad faith, full return required.)

Damages

2004DA48515.

A seller of an apartment who failed to inform the buyer that a landfill site was to be built in the vicinity was held responsible for fraud (a tort), with the sale contract voidable:

Alternatively, the buyer may keep the contract and sue for damage on the ground of the seller's breach of contract.

Claimant may elect to seek damage in respect of breach of warranty. The buyer is entitled to performance measure damage (in respect of the 'defect') without terminating the contract.

Seller's failure to disclose (before concluding the contract) can also be regarded as a "breach of contract" 2006Da79742

발표자: 정준희 (2009.4.30)

I. 서설

II. Software의 구조

1. SW의 의의

2. Source Code

3. Object Code

III. Reverse Engineering에 관한 일반론 법적 쟁점

1. Reverse Engineering 의 의의

2. 용어의 구별

3. Reverse Engineering의 필요성

4. Reverse Engineering의 저작권 침해가능성

IV. Reverse Engineering과 관련된 저작권법상 법규정

1. 특허법상 Reverse Engineering

2. 컴퓨터프로그램보호법상의 Reverse Engineering 조항의 해석

V. Reverse Engineering 허용 규정 및 외국의 입법례

1. 문제의 제기

2. 컴퓨터프로그램보호법상 Reverse Engineering 규정의 검토

3. Fair Use Doctrine

4. EU지침

5. 소결

VI. License 계약에 Reverse Engineering 제한 가능성

1. 문제의 제기

2. 판례를 중심으로 한 미국의 태도

3. EU 국가들의 태도

4. 일본의 태도

(5. 국내의 사례)

6. 소결

VII. 결언

참고문헌

손승우. 저작권과 쉬링크랩 라이선스상의 SW

정진근. SW 역분석 조항의 법적 지위와 계약에 의한 제한가능성.

강기봉, 정봉현. 컴퓨터프로그램보호법상 SW 리버스 엔지니어링 규정에 관한 소고

안효질. 프로그램코드역분석 규정의 비교법적 분석.

김기창, 컴퓨터 프로그램 보호법제, 安岩法學 25號, 安岩法學會, 2007.11

Jeffrey A. Andrews. REVERSING COPYRIGHT MISUSE: ENFORCING CONTRACTUAL PROHIBITIONS ON SOFTWARE REVERSE ENGINEERING

발표자: 김태훈

목차

I. 서

II. 끼워팔기에 대한 규제

1. 끼워팔기의 의의

2. 끼워팔기의 유형

(1) 일반적 끼워팔기

(2) 기술적 끼워팔기

3. 끼워팔기에 관한 경제이론 미국의 판례법

(1) 지렛대 이론

(2) 시카고학파의 가격차별이론

(3) 후기 시카고학파의 전략적차단이론

4. 끼워팔기에 대한 독점규제법상의 규제

(1) 끼워팔기의 개념

(2) 끼워팔기의 성립요건

가. 상품의 독립성

나. 거래의 강제성

다. 부당성

라. 시장지배력의 문제

(3) 끼워팔기의 효과

III. 소프트웨어산업과 경쟁법

1. 소프트웨어산업의 특수성

(1) 네트워트 효과 - 응용프로그램의 장벽

(2) 규모의 경제

2. 소프트웨어 끼워팔기 규제의 판단기준

(1) 전통적

(2) 신기준 - 효율성 고려

(3) 소결 - 동태적관점

IV. MS 사례 분석

V. 결론

참고문헌

<단행본>

권오승, 「경제법」, 법문사, 2002

김정호, 「누가 소비자를 가두는가」,교보문고, 2007

이기수 · 유진희, 「경제법」, 세창출판사, 2004

이원형, 「컴퓨터 프로그램과 법」, 이진출판사, 2000

<논문>

김희수 · 김재홍, “끼워팔기의 동태적 모형 - Microsoft사의 전략을 중심으로”, 산업조직연구 제6집 제2호,한국산업조직학회, 1998.

이봉의, “독점적 사업자의 끼워팔기 : 마이크로소프트사의 지위남용을 중심으로”, 법과사회 27권, 법과사회이론학회, 2004.

이상승 · 장승화, “공정거래법상 컴퓨터소프트웨어의 끼워팔기규제”, 서울대학교 법학 제43권 제3호, 2002.

이철남, “시장지배적 지적재산권자의 라이선스거절과 끼워팔기의 규제에 관한 연구”, 고려대학교 박사학위논문, 2005. 6.

정호열, “마이크로소프트사 사건과 미국 독점금지정책의 향방”, 비교사법 제8권 제2호, 2001.

정호열, “마이크로소프트 소송 제1심판결 분석”, 저스티스 통권 제65호, 2002.

정호열 · 오승한, “1998년 MS소송의 쟁점분석-제1심과항소심 판결의 비교를 중심으로”, 경쟁법연구 제8권, 한국경쟁법학회, 2002.

각자가 준비하는 주제를 명시하고, 참고문헌, 잠정적 목차 등을 댓글, 또는 이메일로 알려주시면, 제가 본문에 반영하겠습니다.

한 학기 동안의 성과를 여러분 공동저자가 되어 책으로 펴내는 것을 목표로 노력해 봅시다.

어제(4.8) 공지한 날짜는 제가 착각한 것입니다. 목요일로 모두 수정했습니다. 혼란을 끼쳐드려 죄송합니다.

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