Business law practice in Madrid
Companies · Shareholders · Investors · Madrid

Business law for corporate decisions with legal certainty

We advise companies, shareholders, and investors on corporate conflicts, shareholder agreements, commercial contracts, director liability, and corporate reorganization.

Shareholder Disputes · Corporate Deadlock
Shareholder Agreements · Investor Entry and Exit
Commercial Contracts · Real Business Risk
Director Liability · Corporate Defense
What we resolve

Business problems we solve with judgment

Our priority is not "doing corporate work"—it is solving conflicts and decisions that affect control, investment, contracts, liability, or business continuity.

Shareholder disputes and decision deadlock

When relationships break down and the company becomes paralyzed. We intervene to unblock the situation, protect your position, and find a viable way forward.

  • Agreement deadlock and shareholder exit
  • Negotiation with real corporate leverage
  • Preliminary measures before challenge or litigation

Formation, reorganization, and corporate order

Company formation, mergers, spin-offs, or restructurings designed from business logic, not just registration requirements.

  • Formation and corporate redesign
  • Bylaws, corporate bodies, and decision rules
  • Internal restructuring before conflict arises

Shareholder agreements and investor entry or exit

We establish the rules of the game between shareholders before problems arise: investor entry, exit clauses, drag-along and tag-along rights.

  • Drag-along, tag-along and lock-up provisions
  • Sensitive political and economic rights
  • Disputes over agreement breach

Commercial contracts affecting margin or control

We review and negotiate distribution, supply, agency, franchise, or joint venture contracts to protect your commercial position.

  • Distribution, supply, and service contracts
  • Warranties, penalties, and imbalances
  • Breaches with real business impact

Director risk and personal liability

When a director faces personal wealth exposure. We analyze the risk, organize documentation, and prevent claims.

  • Fiduciary duties and personal exposure
  • Defense against claims and criticism
  • Corporate decisions with personal risk

Challenge of resolutions and corporate defense

If a shareholder or board resolution harms your rights as a shareholder or director, we challenge it with solid grounds and clear litigation strategy.

  • Challenge or defense of corporate resolutions
  • Documentary evidence and litigation strategy
  • Protection of control, investment, and reputation
How we work

Our process in 4 steps

Each matter follows an organized process so legal intervention is useful from day one.

1

Case review

We study the documentation, corporate structure, and position of each party to understand the matter before making any recommendation.

2

Diagnosis and strategy

We identify the real risks, available legal paths, and present you with a clear strategy including timeline, costs, and scenarios.

3

Documentary execution

We draft, negotiate, or review necessary documents: agreements, contracts, minutes, deeds, demands, or court filings.

4

Follow-up and closure

We oversee execution, resolve issues, and provide periodic updates until complete matter closure.

Frequently asked questions

Common questions about business law

The firm offers an initial assessment by video or in-person consultation. At that first contact, we will tell you whether your case requires intervention, what options exist, and provide an estimated cost for the service.
There are several paths: direct negotiation with legal support, mediation, challenging corporate resolutions, or shareholder separation action. The strategy depends on the bylaws, shareholder agreement, and each party's actual position. We evaluate this at the initial consultation.
Bylaws establish the legal minimum. A shareholder agreement allows you to agree on lock-up periods, exit, drag-along, tag-along, profit distribution, veto rights, and other rules the bylaws don't cover. It is especially important when there is external investment or shareholders with different roles.
A director is personally liable with their own assets if they breach duties of care, loyalty, or fail to promote dissolution in case of serious losses. It is essential to document every decision and obtain legal advice on sensitive operations.
Yes, if the resolution violates law, bylaws, or harms the corporate interest to benefit one or several shareholders. The deadline is one year from registration or deposit, or three months for voidable resolutions. Acting quickly is essential.
It depends on the matter, but typically: articles of incorporation, bylaws, shareholder agreements if any, relevant contracts, recent minutes, and a brief description of the situation. If you don't have all documentation, we work with what you have for an initial assessment.
First contact

Tell us about your business situation

Share the context and essential documentation. We will review your matter and suggest the most effective way to address it with legal certainty.

It is especially helpful to mention if there is shareholder conflict, a contract under review, a sensitive corporate decision, or a pending claim.

The consultation is registered with the firm and sent to info@castellanalawfirm.com.

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