1. Introduction

EU competition law has had a profound influence on German competition law. Germany possesses its own competition statute, the Gesetz gegen Wettbewerbsbeschränkungen (GWB), and its own enforcement authority, the Bundeskartellamt. However, where business conduct is capable of affecting trade between EU Member States, Articles 101 and 102 TFEU operate alongside German competition rules.

The relationship is therefore not one of simple replacement of German law by EU law. Rather, EU competition law has produced:

1. harmonisation of substantive competition standards;
2. Europeanisation of German enforcement;
3. greater importance for EU market integration;
4. decentralised application of EU competition law by German authorities and courts;
5. development of German doctrines under the influence of CJEU jurisprudence;
6. stronger cooperation between the Bundeskartellamt and European Commission;
7. limits on Germany's ability to apply national rules where EU law has already regulated the matter; and
8. continuing space for Germany to adopt stricter national competition rules in certain areas.

The Bundeskartellamt expressly applies Articles 101 and 102 TFEU in addition to the GWB where the conduct may affect trade between Member States. Regulation 1/2003 was particularly important because it gave national competition authorities extensive powers to enforce EU competition law.

2. Historical Relationship Between EU and German Competition Law

German competition law developed independently after the Second World War. The GWB entered into force on 1 January 1958, establishing a strong domestic framework against restraints of competition. German merger control was subsequently introduced in 1973.

At the European level, competition law developed around the objectives of creating and protecting the internal market.

The principal provisions are:

• Article 101 TFEU — restrictive agreements, decisions and concerted practices;
• Article 102 TFEU — abuse of dominant position;
• EU Merger Regulation — EU-level merger control;
• Regulation 1/2003 — decentralised enforcement of Articles 101 and 102;
• European Competition Network (ECN) — cooperation between the European Commission and national competition authorities.

The German framework now expressly contains provisions dealing with the application and relationship of European competition law. The GWB includes a specific chapter on the application of European competition law.

3. Major Areas of EU Influence on Germany

A. Influence on Cartel Law

Article 101 TFEU has strongly influenced the interpretation and application of Section 1 GWB.

Both systems prohibit agreements or coordinated behaviour that restrict competition. German authorities therefore frequently consider:

• price fixing;
• market sharing;
• output restrictions;
• customer allocation;
• bid rigging;
• information exchange;
• vertical restrictions;
• resale-price restrictions; and
• horizontal cooperation.

Where conduct affects interstate trade, Article 101 becomes directly relevant.

The result is a substantial convergence between German and EU cartel law.

4. Case Law

Case 1: Walt Wilhelm v Bundeskartellamt (Case 14/68)

Facts

Walt Wilhelm and other undertakings were involved in proceedings concerning cartel behaviour. The issue was whether national German competition law could operate alongside European competition law.

Legal Issue

Could German competition law and European competition law apply simultaneously to the same conduct?

Decision

The Court of Justice recognised that national and European competition rules could operate in parallel, provided that national application did not undermine the effectiveness and uniform application of Community competition law.

Importance for Germany

This case established one of the foundational principles governing the relationship between German and EU competition law.

It demonstrated that EU competition law did not simply eliminate national competition law.

Instead:

German law could continue to regulate domestic competition, while European law addressed conduct affecting interstate trade.

Influence

The case provided the conceptual basis for the later coexistence of:

• GWB rules; and
• Articles 101 and 102 TFEU.

It is therefore one of the most important cases for understanding the Europeanisation of German competition law.

5. Case 2: Continental Can v Commission (Case 6/72)

Facts

Continental Can concerned the acquisition of companies in the packaging sector and the use of market power to strengthen an existing dominant position.

Legal Issue

Could European competition law control conduct involving the strengthening of a dominant position?

Decision

The Court of Justice gave a broad interpretation to the European prohibition on abuse of dominance. It recognised that conduct capable of substantially strengthening a dominant position could fall within European competition law.

Influence on Germany

The case contributed to the development of the European understanding of dominance and abusive conduct.

German competition law traditionally placed considerable emphasis on structural market power. European jurisprudence reinforced the importance of examining:

• market structure;
• barriers to entry;
• economic power;
• exclusionary strategies; and
• effects on competitive conditions.

This helped strengthen the analytical relationship between Section 19 GWB and Article 102 TFEU.

6. Case 3: Deutsche Telekom AG v Commission (C-280/08 P)

Facts

Deutsche Telekom, a major German telecommunications undertaking, was accused of imposing a margin squeeze between wholesale prices and retail prices.

Legal Issue

Could a vertically integrated dominant undertaking be liable under Article 102 TFEU for a margin squeeze?

Decision

The EU courts upheld the finding that Deutsche Telekom had abused its dominant position.

The important point was that an undertaking could infringe Article 102 even where the relevant wholesale prices were subject to regulatory control.

Significance for Germany

This was particularly important because it demonstrated that sector regulation does not automatically immunise a dominant undertaking from EU competition law.

The case influenced German approaches to:

• telecommunications markets;
• access pricing;
• vertically integrated firms;
• essential infrastructure;
• margin squeeze;
• network industries; and
• regulated monopolies.

It also demonstrated the practical significance of EU competition law for major German companies operating across European markets.

7. Case 4: Masterfoods Ltd v HB Ice Cream Ltd (C-344/98)

Facts

The case concerned parallel proceedings before national courts and the European Commission involving competition-law questions.

Legal Issue

How should national courts deal with EU competition-law decisions?

Decision

The Court of Justice emphasised the importance of consistency between national judicial proceedings and European Commission decisions.

National courts must avoid decisions that conflict with binding EU competition-law determinations.

Influence on Germany

This principle is extremely important for German courts.

German courts dealing with competition disputes must take account of:

• European Commission decisions;
• CJEU judgments;
• EU competition regulations;
• EU block exemptions; and
• the broader principle of effectiveness of EU law.

The result is that German competition adjudication cannot be considered entirely autonomous from the European system.

8. Case 5: Courage Ltd v Crehan (C-453/99)

Facts

The case concerned an agreement allegedly contrary to EU competition law and whether an individual could seek damages resulting from an infringement.

Legal Issue

Does EU competition law create rights enforceable by private parties before national courts?

Decision

The Court of Justice recognised that individuals could rely upon EU competition law and seek compensation for harm caused by infringements.

Influence on Germany

The case contributed to the development of private enforcement of EU competition law in Germany.

German competition litigation consequently became increasingly important in:

• cartel damages;
• follow-on claims;
• compensation for customers;
• supplier claims;
• collective enforcement; and
• civil litigation following competition-authority decisions.

The influence is particularly significant because German courts became an important forum for private enforcement of European competition rules.

9. Case 6: Intel Corp. v Commission (C-413/14 P)

Facts

Intel was found by the European Commission to have abused its dominant position through rebate practices.

The dispute ultimately reached the Court of Justice.

Legal Issue

How should exclusivity rebates by dominant undertakings be assessed under Article 102?

Decision

The Court of Justice held that where the undertaking concerned contests the capability of its conduct to exclude equally efficient competitors, the Commission should examine the relevant circumstances, including the as-efficient-competitor (AEC) analysis where appropriate.

The judgment therefore strengthened an effects-oriented assessment of exclusionary conduct.

Influence on Germany

The Intel judgment is highly relevant to German enforcement involving:

• rebates;
• loyalty discounts;
• platform incentives;
• exclusivity arrangements;
• vertical restrictions; and
• digital markets.

It reinforces the importance of economic analysis rather than relying exclusively upon formal classifications of conduct.

10. Case 7: Post Danmark I (C-209/10)

Facts

Post Danmark, a dominant postal operator, was accused of engaging in conduct capable of excluding competitors.

Legal Issue

How should Article 102 apply to exclusionary conduct by a dominant undertaking?

Decision

The Court of Justice emphasised that Article 102 is concerned with conduct capable of producing exclusionary effects and that competition law should distinguish legitimate competition on the merits from abusive exclusion.

Influence on Germany

This approach has influenced German analysis of:

• predatory pricing;
• selective pricing;
• rebates;
• exclusionary strategies;
• dominant firms; and
• consumer welfare.

It complements Germany's own effects-oriented development of abuse-of-dominance law.

11. Case 8: Cartes Bancaires v Commission (C-67/13 P)

Facts

The case concerned rules adopted within the French banking-card system.

Legal Issue

When can an agreement be classified as a restriction of competition by object under Article 101?

Decision

The Court of Justice stressed that the "by object" category must be interpreted narrowly. A restriction cannot automatically be treated as a by-object infringement merely because it potentially has restrictive characteristics.

Influence on Germany

This is important for German competition authorities and courts because it reinforces the need to distinguish:

• serious restrictions by object; and
• conduct requiring an effects analysis.

German authorities therefore have to consider the legal and economic context of agreements rather than automatically classifying every potentially restrictive arrangement as a by-object infringement.

12. EU Merger Control and Germany

EU competition law has also substantially influenced German merger control.

Germany operates its own merger-control system under the GWB, while concentrations satisfying the EU Merger Regulation's jurisdictional requirements may fall within the European Commission's exclusive merger-control jurisdiction.

This produces a division of responsibility:

The introduction of German merger control in 1973 was itself a major development in German competition policy, while EU merger control subsequently created a second, supranational layer.

13. Regulation 1/2003 and Decentralisation

One of the greatest institutional influences of EU law on Germany came from Regulation 1/2003.

Before decentralisation, European competition-law enforcement was much more centralised.

After Regulation 1/2003, national authorities such as the Bundeskartellamt became important enforcers of Articles 101 and 102.

Germany therefore moved from a model in which European competition law was primarily associated with Brussels to one in which:

European competition law is also enforced in Bonn and before German courts.

The German government describes Regulation 1/2003 as having significantly decentralised enforcement of EU competition rules.

14. European Competition Network and Germany

The European Competition Network (ECN) has further integrated Germany into the European enforcement system.

The Bundeskartellamt cooperates with:

• European Commission;
• competition authorities of other Member States;
• national courts; and
• other European enforcement institutions.

This cooperation includes:

• information exchange;
• evidence sharing;
• coordinated investigations;
• inspections;
• allocation of cases;
• enforcement cooperation; and
• development of competition policy.

The GWB itself contains provisions facilitating information exchange and investigative cooperation within the ECN.

15. Influence on German Dominance Law

Article 102 TFEU has strongly influenced German treatment of dominant undertakings.

The German system contains:

• Section 18 GWB — market dominance;
• Section 19 GWB — prohibited conduct by dominant undertakings;
• Section 19a GWB — abusive conduct by undertakings of paramount significance for competition across markets;
• Section 20 GWB — certain conduct involving relative or superior market power.

The structure shows an important distinction.

EU law establishes a European baseline, while Germany sometimes goes further.

For example, Germany's Section 19a GWB was developed specifically to address powerful digital ecosystems and undertakings possessing significance across markets.

Thus, EU influence does not necessarily mean complete harmonisation.

16. Germany as a Driver of European Competition Policy

The influence also works in the opposite direction.

Germany has not merely received EU competition law; German competition policy has influenced the development of European competition thinking.

Important German traditions include:

• ordoliberalism;
• protection of competitive structures;
• concern with economic concentration;
• strong merger control;
• structural market analysis;
• independent competition authorities; and
• concern about excessive private economic power.

The German competition model therefore contributed to the broader European competition tradition.

17. EU Law as a Minimum Framework, Not Always a Maximum Framework

A crucial point is that EU competition law does not completely prevent Germany from adopting stronger domestic competition rules.

The GWB contains provisions specifically addressing the relationship between German and European competition law.

Consequently, Germany can sometimes impose stricter requirements, particularly where national law addresses forms of market power not fully covered by Article 102.

This is especially significant in modern digital markets.

For example, German law can address:

• relative market power;
• dependence on dominant business partners;
• digital ecosystems;
• cross-market significance;
• access to data;
• platform dependencies; and
• certain forms of intermediary power.

This explains why Germany has sometimes been regarded as a laboratory for digital competition regulation within Europe.

18. EU Competition Law and Digital Markets in Germany

The Europeanisation of competition law has become even more important because of digital markets.

German authorities increasingly operate within a multi-layered framework involving:

1. GWB;
2. Articles 101 and 102 TFEU;
3. EU Merger Regulation;
4. Digital Markets Act;
5. ECN cooperation;
6. CJEU jurisprudence; and
7. German competition jurisprudence.

The GWB itself now expressly provides for cooperation concerning the Digital Markets Act as well as Articles 101 and 102.

This creates a more complex regulatory environment for major technology companies.

19. Important Effects of EU Competition Law on German Legal Doctrine

1. Harmonisation

German competition law has increasingly developed concepts compatible with EU law.

2. Economic analysis

EU jurisprudence has encouraged greater attention to:

• market effects;
• foreclosure;
• efficiencies;
• consumer welfare;
• economic evidence; and
• competitive harm.

3. Judicial Europeanisation

German courts must interpret applicable EU competition provisions consistently with CJEU jurisprudence.

4. Administrative cooperation

The Bundeskartellamt operates within the ECN rather than as an isolated national authority.

5. Cross-border enforcement

German companies can be investigated under EU competition law even when the conduct originates partly outside Germany if it affects EU trade.

6. Private enforcement

EU competition principles have contributed to the expansion of cartel-damages litigation in German courts.

7. Digital competition regulation

EU developments concerning digital platforms increasingly interact with Germany's GWB and particularly Section 19a.

20. EU Competition Law vs German Competition Law

21. Overall Legal Significance

The relationship can be represented as:

EU Treaty Rules
↓
Articles 101 & 102 TFEU
↓
CJEU Jurisprudence
↓
Regulation 1/2003 / ECN
↓
Bundeskartellamt + German Courts
↓
GWB Interpretation and Enforcement

At the same time, Germany retains areas of independent regulatory discretion:

German Competition Policy
↓
GWB Sections 18–20 and 19a
↓
Stricter national intervention in certain circumstances
↓
Interaction with EU competition rules

22. Conclusion

EU competition law has fundamentally transformed German competition law without eliminating its national identity.

The influence operates at four principal levels:

1. Substantive influence — Articles 101 and 102 have harmonised German treatment of cartels and abuses of dominance.
2. Institutional influence — the Bundeskartellamt has become an important European competition authority through Regulation 1/2003 and the ECN.
3. Judicial influence — CJEU judgments such as Walt Wilhelm, Continental Can, Deutsche Telekom, Masterfoods, Courage, Intel, Post Danmark and Cartes Bancaires shape German competition-law interpretation.
4. Regulatory influence — EU competition law increasingly interacts with German rules governing digital platforms, market power, mergers and economic dependencies.

The most accurate characterization is therefore Europeanisation rather than complete harmonisation. Germany remains capable of developing distinctive rules—particularly concerning relative market power and powerful digital ecosystems—while EU law establishes an essential European framework for conduct affecting the internal market.