The certified letter arrived on a Tuesday. I remember the weird, plasticky feel of the envelope. I was 23, running my first company, and we were on top of the world. We were getting traction, users were signing up, and I felt like the universe had personally handed me a winning lottery ticket. Then I opened that letter.
It was a lawsuit. A big one. The kind that uses words like "injunction," "damages," and "willful infringement." Suddenly, the world wasn't so bright. The legal bills started piling up faster than our user sign-ups. I learned the hard way that ignoring legal isn't just risky—it's fatal. That company, my first real shot, died a slow, expensive death. It was sued into oblivion.
I’m Sahin Boydas. I’ve been lucky enough to have a couple of successful exits since then—RemoteTeam was acquired by Gusto, and MovieLaLa by Gfycat. I’ve also invested in over 200 startups, including some you might know like Anthropic and OpenAI. I’ve seen this story play out more times than I can count. It’s a brutal, soul-crushing experience. And it’s almost always avoidable. Here are the five devastating, company-killing legal mistakes I made so you don't have to.
1. The “Handshake” Co-founder Agreement
When you start a company, it’s usually with friends. You’re in a garage, fueled by pizza and a shared vision. The last thing you want to do is bring in lawyers and talk about what happens if one of you leaves or you have a major disagreement. It feels like planning for a divorce on your wedding day.
We didn’t have a real co-founder agreement. We had a vague understanding scribbled on a whiteboard. We figured we’d “formalize it later.” Later never came. When the pressure mounted from the lawsuit, my co-founder and I started seeing things differently. He wanted to settle, I wanted to fight. He thought I was being reckless; I thought he was giving up. Because we had no formal agreement outlining our roles, responsibilities, or a process for dispute resolution, our fight became as big a problem as the lawsuit itself.
The lesson: Get it in writing. From day one. Your co-founder agreement needs to cover three critical things:
- Equity and Vesting: Who gets what percentage of the company, and when? A standard four-year vesting schedule with a one-year cliff is non-negotiable. This means you have to stay with the company for at least a year to get any equity, and you earn the rest over the following three years. If someone leaves early, the company gets the unvested shares back. No exceptions.
- Roles and Responsibilities: Who is the CEO? Who is the CTO? Who has the final say on product? On finances? Be painfully specific. Ambiguity is where friendships and companies go to die.
- The “Hit by a Bus” Clause: What happens if a founder leaves, dies, or becomes disabled? You need a clear buy-sell agreement that dictates how the departing founder's shares are handled. Without it, you could end up with a co-founder's spouse as your new business partner.
2. Playing Fast and Loose with Intellectual Property
We were building our product at lightning speed. We grabbed code from open-source libraries, hired a freelancer to design our logo, and had interns writing core parts of our application. We didn't think twice about who owned what. We just wanted to ship.
This turned into a nightmare. The lawsuit alleged that a piece of open-source code we used had a restrictive license (GPL), which meant our entire proprietary codebase was now technically required to be open-sourced. On top of that, the freelancer we hired for the logo never signed an IP assignment agreement. He came back later, after we’d gotten some press, claiming he owned the brand we had built. He was right.
The lesson: Your intellectual property is one of the most valuable assets you have. Protect it like a fortress.
- IP Assignment Agreements for Everyone: Every single person who touches your product—employees, contractors, interns, advisors—must sign an agreement that explicitly states the company owns all the intellectual property they create for the business. No agreement, no work.
- Audit Your Open-Source: Don't just
npm installand hope for the best. Use tools to scan your codebase and understand the licenses of the libraries you're using. Some licenses (like MIT or Apache) are permissive. Others (like GPL) can be poison pills for a commercial startup. - Trademark Your Brand: As soon as you have a name and logo you’re serious about, file for a trademark. It’s not that expensive, and it gives you the legal high ground to shut down copycats and prevent the kind of brand-jacking we experienced.
3. Using “Frankenstein” Contracts
We needed a Terms of Service and a Privacy Policy. I didn’t want to spend money on a lawyer, so I did what every naive founder does: I copied and pasted from other websites. I took a paragraph from one site, a clause from another, and stitched them together into a legal Frankenstein's monster.
It was a disaster. Our cobbled-together ToS had conflicting clauses and didn't actually protect us from the things we needed protection from. When a user did something that violated our intended rules, we found our own contract was so poorly written that we had no legal standing to enforce it. It made us look amateurish and left us completely exposed.
The lesson: Templates are a starting point, not a solution. Your legal documents are the armor that protects your business. Don't build it out of scrap metal.
I’m not saying you need to spend $20,000 on bespoke contracts on day one. Services like Clerky or Stripe Atlas provide solid, startup-friendly legal templates. But you need to understand what they say. Pay a lawyer for a few hours to review your core documents—your ToS, Privacy Policy, and customer agreements. That small investment can save you millions.
4. Ignoring Corporate Formalities
We had a Delaware C-Corp, which sounds official. But we treated it like a shared bank account. We paid for personal dinners with the company debit card, never held a formal board meeting (or even knew we were supposed to), and mixed our personal and business finances constantly. In our minds, the company was just an extension of us.
Legally, that’s a catastrophe. The whole point of a corporation is to create a legal shield between your personal assets and the business's liabilities. When you ignore the rules—the “corporate formalities”—a court can “pierce the corporate veil” and decide that you and the company are one and the same. That means if the company gets sued and loses, they can come after your personal bank account, your car, your house. Everything.
The lesson: Run your company like a real company from the start.
- Separate Bank Accounts: This is non-negotiable. All company revenue goes into the company account. All business expenses are paid from the company account. Period.
- Document Everything: Hold board meetings, even if it’s just you and your co-founder in a coffee shop. Write down what you decided in formal minutes and save them. Approve major decisions, like issuing stock or taking on debt, with a board resolution.
- Don’t Co-mingle Funds: Never, ever pay for personal expenses with company money. If you need to take money out, do it properly as a formal salary or a distribution. Don't just '''"borrow" from the company account.
5. Being Afraid of Lawyers
This was my biggest mistake. I saw lawyers as a necessary evil, a cost center to be avoided at all costs. I thought engaging a lawyer was admitting I had a problem. I tried to handle everything myself, from negotiating contracts to responding to the initial legal threats. I was out of my depth, and it showed.
By the time I finally hired a good startup lawyer, the damage was done. We had already made critical admissions and strategic errors. Our legal position was weak, and our options were limited. My attempt to save a few thousand dollars in legal fees ended up costing me the entire company.
The lesson: A good lawyer is not a cost center; they are a strategic partner. Find one early, and don't be afraid to use them.
Don't just hire your uncle who does real estate law. You need a specialist—a lawyer who lives and breathes startups. They know the standard terms, they understand the game, and they can give you 90% of the advice you need in a 15-minute phone call. The right lawyer will save you far more money than they cost.
The Scars Are the Lesson
Losing my first company was one of the most painful experiences of my life. It felt like a public failure. But looking back, that failure was a masterclass in what not to do. It taught me that building a great product is only half the battle. The other half is building a resilient company, and that starts with a solid legal foundation.
Don't let a stupid, avoidable mistake kill your dream. Learn from the scars I earned. Take this stuff seriously. Your future self will thank you. '''
Frequently Asked Questions
How has this view evolved over time?
My thinking on most topics has changed significantly over the years. Early in my career, I held many conventional views that experience proved wrong. I try to update my beliefs when the evidence changes.
What experience informs this perspective?
This perspective comes from over a decade of building companies in Silicon Valley, two successful exits (RemoteTeam to Gusto, MovieLaLa to Gfycat), and investing in 200+ startups including Anthropic, OpenAI, and Scale AI. I write about what I've lived.
How can I apply this thinking to my own situation?
Start by identifying the core principle behind the opinion, not the specific example. Then ask yourself: does this principle apply to my context? If yes, test it in a small, low-risk way before going all in.
Do all experts agree with this view?
No, and that's fine. The best ideas in business are often contrarian. I share my perspective based on my experience and data, but I encourage you to seek out opposing viewpoints and form your own conclusions.